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Bailey & Scott's Diagnostic Microbiology - E-Book

Bailey & Scott's Diagnostic Microbiology - E-Book

Patricia Tille

(2015)

Additional Information

Book Details

Abstract

Perfect your lab skills with the gold standard in microbiology! Serving as both the #1 bench reference for practicing microbiologists and as a favorite text for students in clinical laboratory science programs, Bailey & Scott’s Diagnostic Microbiology, 14th Edition covers all the topical information and critical thinking practice you need for effective laboratory testing. This new edition also features hundreds step-by-step procedures, updated visuals, new case studies, and new material on the latest trends and equipment in clinical microbiology — including automation, automated streaking, MALDI-TOF, and incubator microscopes. It’s everything you need to get quality lab results in class and in clinical practice!

  • More than 800 detailed, full-color illustrations aid comprehension and help in visualizing concepts.
  • Expanded sections on parasitology, mycology, and virology eliminate the need to purchase separate books on this material.
  • General and Species boxes in the organism chapters highlight the important topics that will be discussed in the chapter.
  • Case studies provide the opportunity to apply information to a variety of diagnostic scenarios, and help improve decision-making and critical thinking skills.
  • Hands-on procedures include step-by-step instructions, full-color photos, and expected results.
  • A glossary of terms is found at the back of the book for quick reference.
  • Learning objectives begin each chapter, offering a measurable outcome to achieve by the completing the material.
  • Learning resources on the Evolve companion website enhance learning with review questions and procedures.
  • NEW! Coverage of automation, automated streaking, MALDI-TOF, and incubator microscopes keeps you in the know on these progressing topics.
  • NEW! Updated images provide a more vivid look into book content and reflect the latest procedures.
  • NEW! Thoroughly reviewed and updated chapters equip you with the most current information.
  • NEW! Significant lab manual improvements provide an excellent learning resource at no extra cost.
  • NEW! 10 extra case studies on the Evolve companion website offer more opportunities to improve critical thinking skills.

Table of Contents

Section Title Page Action Price
Cover Page Cover
Front matter iii
Bailey & scott’s diagnostic microbiology iii
Copyright iv
Dedication v
Reviewers vi
Contributors viii
Preface x
Acknowledgments xi
Table of contents xii
Part I Basic Medical Microbiology 1
1 Microbial taxonomy 1
Objectives 1
Classification 2
Family 2
Genus 2
Species 2
Nomenclature 2
Identification 3
Identification methods 3
Bibliography 4
2 Bacterial genetics, metabolism, and structure 5
Objectives 5
Bacterial genetics 5
Nucleic acid structure and organization 5
Nucleotide structure and sequence 6
DNA molecular structure 6
Genes and the genetic code 6
Chromosomes 6
Nonchromosomal elements 6
Replication and expression of genetic information 8
Replication 8
Expression of genetic information 9
Transcription 9
Translation 10
Regulation and control of gene expression 11
Genetic exchange and diversity 13
Mutation 14
Genetic recombination 14
Genetic exchange 14
Transformation. 14
Transduction 14
Conjugation 15
Bacterial metabolism 17
Fueling 17
Acquisition of nutrients 17
Production of precursor metabolites 17
Energy production 17
Oxidative phosphorylation 19
Biosynthesis 19
Polymerization and assembly 20
Structure and function of the bacterial cell 20
Eukaryotic and prokaryotic cells 20
Bacterial morphology 20
Bacterial cell components 21
Cell envelope 21
Outer membrane 21
Cell wall (murein layer) 21
Periplasmic space 22
Cytoplasmic (inner) membrane 22
Cellular appendages 22
Cell interior 23
Bibliography 23
3 Host-microorganism interactions 24
Objectives 24
The encounter between host and microorganism 25
The human host’s perspective 25
Microbial reservoirs and transmission 25
Human and microbe interactions 26
Animals as microbial reservoirs 26
Insects as vectors 27
The environment as a microbial reservoir 27
The microorganism’s perspective 27
Microorganism colonization of host surfaces 27
The host’s perspective 27
Skin and skin structures 27
Mucous membranes 28
General protective characteristics 29
Specific protective characteristics 29
The microorganism’s perspective 30
Microbial colonization 30
Microorganism entry, invasion, and dissemination 30
The host’s perspective 30
Disruption of surface barriers 30
Responses to microbial invasion of deeper tissues 31
Nonspecific responses 31
Phagocytes 31
Inflammation 32
Specific responses—the immune system 33
Components of the immune system 33
Two branches of the immune system 33
The microorganism’s perspective 35
Colonization and infection 35
Pathogens and virulence 35
Microbial virulence factors 36
Attachment 36
Invasion. 36
Survival against inflammation 36
Survival against the immune system 37
Microbial toxins 37
Genetics of virulence: Pathogenicity islands 38
Biofilm formation 38
Outcome and prevention of infectious diseases 39
Outcome of infectious diseases 39
Prevention of infectious diseases 39
Immunization 40
Epidemiology 41
Bibliography 41
Part II General Principles in Clinical Microbiology 42
Section 1 Safety and Specimen Management 42
4 Laboratory safety 42
Objectives 42
Sterilization, disinfection, and decontamination 42
Methods of sterilization 43
Methods of disinfection 43
Physical methods of disinfection 43
Chemical methods of disinfection 44
Antiseptics 45
Chemical safety 45
Fire safety 46
Electrical safety 46
Handling of compressed gases 46
Biosafety 47
Exposure control plan 47
Employee education and orientation 48
Disposal of hazardous waste 48
Standard precautions 48
Engineering controls 49
Laboratory environment 49
Biologic safety cabinet 50
Personal protective equipment 51
Postexposure control 52
Classification of biologic agents based on hazard 52
Mailing biohazardous materials 53
Bibliography 55
5 Specimen management 56
Objectives 56
General concepts for specimen collection and handling 56
Appropriate collection techniques 57
Specimen transport 57
Specimen preservation 57
Specimen storage 57
Specimen labeling 66
Specimen requisition 66
Rejection of unacceptable specimens 66
Specimen processing 66
Gross examination of specimen 67
Direct microscopic examination 67
Selection of culture media 67
Specimen preparation 69
Inoculation on solid media 69
Incubation conditions 69
Specimen workup 69
Extent of identification required 69
Communication of laboratory findings 70
Critical (panic) values 70
Expediting results reporting: Computerization 70
Bibliography 71
Section 2 Approaches to Diagnosis of Infectious Diseases 72
6 Role of microscopy 72
Objectives 72
Bright-field (light) microscopy 72
Principles of light microscopy 72
Magnification 73
Resolution 73
Contrast 74
Direct and indirect smears 74
Staining techniques 75
Gram stain 75
Procedure overview 75
Principle 75
Gram stain examination (direct smear) 76
Gram stain of bacteria grown in culture (indirect smear) 79
Acid-fast stains 79
Principle 79
Procedure overview 79
Phase-contrast microscopy 79
Fluorescent microscopy 80
Principle of fluorescent microscopy 80
Staining techniques for fluorescent microscopy 81
Fluorochroming 81
Acridine orange 82
Auramine-rhodamine 82
Calcofluor white 82
Immunofluorescence 82
Dark-field microscopy 83
Electron microscopy 84
Digital automated microscopy 85
Bibliography 85
7 Traditional cultivation and identification 86
Objectives 86
Organism identification 86
Principles of bacterial cultivation 86
Nutritional requirements 87
General concepts of culture media 87
Phases of growth media 87
Media classifications and functions 88
Summary of artificial media for routine bacteriology 89
Brain-heart infusion 89
Chocolate agar 89
Columbia cna with blood 89
Gram-negative broth 92
Hektoen enteric agar 92
Macconkey agar 92
Phenylethyl alcohol agar 93
Sheep blood agar 93
Modified thayer-martin agar 93
Thioglycollate broth 93
Xylose-lysine-deoxycholate agar 94
Preparation of artificial media 94
Media sterilization 94
Cell cultures 95
Environmental requirements 95
Oxygen and carbon dioxide availability 95
Temperature 95
Ph 95
Moisture 95
Methods for providing optimal incubation conditions 95
Bacterial cultivation 96
Isolation of bacteria from specimens 96
Evaluation of colony morphologies 96
Type of media supporting bacterial growth 98
Relative quantities of each colony type 98
Colony characteristics 98
Indirect gram stain and subcultures 99
Principles of identification 99
Organism identification using genotypic criteria 100
Organism identification using phenotypic criteria 101
Microscopic morphology and staining characteristics 101
Macroscopic (colony) morphology 102
Environmental requirements for growth 102
Resistance or susceptibility to antimicrobial agents 102
Nutritional requirements and metabolic capabilities 103
Establishing enzymatic capabilities 103
Types of enzyme-based tests 103
Single enzyme tests 103
Catalase test 103
Oxidase test 103
Indole test 104
Urease test 104
Pyr test 104
Hippurate hydrolysis 104
Tests for the presence of metabolic pathways 104
Oxidation and fermentation tests 104
Amino acid degradation 105
Single substrate utilization 106
Establishing inhibitor profiles 106
Principles of phenotypic identification schemes 106
Selection and inoculation of identification test battery 106
Type of bacteria to be identified 106
Clinical significance of the bacterial isolate 106
Availability of reliable testing methods 106
Incubation for substrate utilization 107
Conventional identification 107
Rapid identification 107
Matrix-assisted laser desorption ionization time of flight mass spectrometry 108
Detection of metabolic activity 109
Colorimetry 109
Fluorescence 109
Turbidity 109
Analysis of metabolic profiles 109
Identification databases 109
Use of the database to identify unknown isolates 110
Confidence in identification 111
Commercial identification systems and automation 111
Advantages and examples of commercial system designs 111
Overview of commercial identification systems 112
Bibliography 112
8 Nucleic acidbased analytic methods for microbial identification and characterization 113
Objectives 113
Overview of nucleic acid–based methods 114
Specimen collection and transport 114
Nucleic acid hybridization methods 114
Hybridization steps and components 115
Production and labeling of probe nucleic acid 115
Preparation of target nucleic acid 117
Mixture and hybridization of target and probe 117
Detection of hybridization 118
Hybridization formats 118
Liquid format 118
Solid support format 118
In situ hybridization 119
Peptide nucleic acid fluorescence in situ hybridization 120
Hybridization with signal amplification 120
Amplification methods—polymerase chain reaction–based 122
Overview of polymerase chain reaction and derivations 122
Extraction and denaturation of the target nucleic acid 122
Primer annealing 122
Extension of the primer-target duplex 124
Detection of polymerase chain reaction products 124
Derivations of the polymerase chain reaction method 124
Real-time polymerase chain reaction 126
Amplification methods: Non–polymerase chain reaction–based 132
Coupled target and signal (probe) amplification 132
Isothermal (constant temperature) amplification 132
Sequencing and enzymatic digestion of nucleic acids 134
Nucleic acid sequencing 134
Postamplification and traditional analysis 135
Nucleic acid electrophoresis 135
Pyrosequencing 135
High-density deoxyribonucleic acid (DNA) probes 135
Low- to moderate-density arrays 135
Enzymatic digestion and electrophoresis of nucleic acids 135
Applications of nucleic acid–based methods 137
Direct detection of microorganisms 137
Advantages and disadvantages 138
Analytical specificity 138
Analytical sensitivity 138
Applications for direct molecular detection of microorganisms 139
Identification of microorganisms grown in culture 139
Characterization of microorganisms beyond identification 139
Detection of antimicrobial resistance 140
Investigation of strain relatedness and pulsed-field gel electrophoresis 140
Automation and advances in molecular diagnostic instrumentation 142
Bibliography 142
9 Overview of immunochemical methods used for organism detection 144
Objectives 144
Features of the immune response 144
Characteristics of antibodies 145
Features of the humoral immune response useful in diagnostic testing 146
Interpretation of serologic tests 146
Production of antibodies for use in laboratory testing 147
Polyclonal antibodies 147
Monoclonal antibodies 147
Igm clinical significance 149
Separating igm from igg for serologic testing 149
Principles of immunochemical methods used for organism detection 149
Precipitation tests 150
Double immunodiffusion 150
Single immunodiffusion 150
Particle agglutination 150
Coagglutination 151
Hemagglutination 152
Hemagglutination inhibition assays 152
Flocculation tests 152
Neutralization assays 153
Complement fixation assays 153
Immunofluorescent assays 154
Enzyme immunoassays 156
Solid-phase immunoassay 156
Membrane-bound solid-phase enzyme immunosorbent assay 156
Automated fluorescent immunoassays 158
Western blot immunoassays 158
Summary 160
Bibliography 160
Section 3 Evaluation of Antimicrobial Activity 161
10 Principles of antimicrobial action and resistance 161
Objectives 161
Antimicrobial action 161
Principles 161
Mode of action of antibacterial agents 163
Inhibitors of cell wall synthesis 163
Beta-lactams 164
Fosfomycin 165
Glycopeptides and lipoglycopeptides 165
Inhibitors of cell membrane function 166
Lipopeptides 166
Inhibitors of protein synthesis 166
Aminoglycosides 166
Macrolide-lincosamide-streptogramin group 167
Ketolides 167
Oxazolidinones 167
Chloramphenicol 167
Tetracyclines 167
Glycylglycines 167
Inhibitors of deoxyribonucleic acid and ribonucleic acid synthesis 168
Fluoroquinolones 168
Metronidazole 168
Rifamycin 168
Inhibitors of other metabolic processes 168
Sulfonamides 168
Trimethoprim 169
Nitrofurantoin 169
Mechanisms of antibiotic resistance 169
Principles 169
Biologic versus clinical resistance 169
Environmentally mediated antimicrobial resistance 169
Microorganism-mediated antimicrobial resistance 170
Intrinsic resistance 170
Acquired resistance 171
Common pathways for antimicrobial resistance 171
Resistance to beta-lactam antibiotics 171
Resistance to glycopeptides 174
Resistance to aminoglycosides 174
Resistance to quinolones 174
Resistance to other antimicrobial agents 174
Emergence and dissemination of antimicrobial resistance 175
Bibliography 176
11 Laboratory methods and strategies for antimicrobial susceptibility testing 177
Objectives 177
Goal and limitations 177
Standardization 178
Limitations of standardization 178
Testing methods 178
Principles 178
Methods that directly measure antimicrobial activity 178
Conventional testing methods: General considerations 179
Inoculum preparation 179
Selection of antimicrobial agents for testing 179
Conventional testing methods: Broth dilution 180
Procedures 180
Medium and antimicrobial agents. 180
Inoculation and incubation. 180
Reading and interpretation of results. 180
Advantages and disadvantages. 180
Conventional testing methods: Agar dilution 183
Conventional testing methods: Disk diffusion 184
Procedures 185
Medium and antimicrobial agents. 185
Inoculation and incubation. 185
Reading and interpretation of results. 185
Advantages and disadvantages. 185
Commercial susceptibility testing systems 188
Broth microdilution methods 188
Agar dilution derivations 188
Diffusion in agar derivations 188
Automated antimicrobial susceptibility test systems 189
Alternative approaches for enhancing resistance detection 191
Supplemental testing methods 191
Predictor antimicrobial agents 193
Methods that directly detect specific resistance mechanisms 194
Phenotypic methods 194
Beta-lactamase detection 194
Chloramphenicol acetyltransferase detection 194
Genotypic methods 194
Special methods for complex antimicrobial/organism interactions 195
Bactericidal tests 195
Minimal bactericidal concentration 195
Time-kill studies 196
Serum bactericidal test (schlichter test) 196
Tests for activity of antimicrobial combinations 196
Laboratory strategies for antimicrobial susceptibility testing 197
Relevance 197
When to perform a susceptibility test 198
Determining clinical significance 198
Predictability of antimicrobial susceptibility 198
Availability of reliable susceptibility testing methods 199
Selection of antimicrobial agents for testing 199
Accuracy 199
Use of accurate methodologies 201
Review of results 201
Components of results review strategies 201
Data review 202
Resolution 203
Accuracy and antimicrobial resistance surveillance 203
Communication 203
Reference 204
Bibliography 204
Part III Bacteriology 205
Section 1 Principles of Identification 205
12 Overview of bacterial identification methods and strategies 205
Objectives 205
Rationale for approaching organism identification 205
Future trends of organism identification 206
Bibliography 247
Section 2 Catalase-Positive, Gram-Positive Cocci 248
13 and similar organisms 248
Objectives 248
General characteristics 248
Epidemiology 249
Pathogenesis and spectrum of disease 249
Laboratory diagnosis 252
Specimen collection and transport 252
Specimen processing 252
Direct detection methods 252
Microscopy 252
Cultivation 252
Media of choice 252
Incubation conditions and duration 253
Colonial appearance 253
Approach to identification 254
Comments regarding specific organisms 255
Serodiagnosis 257
Molecular methods 257
Other identification methods 259
Antimicrobial susceptibility testing and therapy 259
Prevention 261
Bibliography 262
Section 3 Catalase-Negative, Gram-Positive Cocci 264
14 and similar organisms 264
Objectives 264
General characteristics 265
Epidemiology 265
Pathogenesis and spectrum of disease 266
Beta-hemolytic streptococci 266
Streptococcus pneumoniae 269
Viridans streptococci 269
Enterococcus species 269
Miscellaneous other gram-positive cocci 270
Laboratory diagnosis 270
Specimen collection and transport 270
Specimen processing 270
Direct detection methods 270
Antigen detection 270
Molecular methods 270
Gram stain 271
Cultivation 271
Media of choice 271
Incubation conditions and duration 274
Colonial appearance 274
Approach to identification 274
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry 275
Comments regarding specific organisms 275
Serodiagnosis 277
Antimicrobial susceptibility testing and therapy 279
Prevention 281
Bibliography 282
Section 4 Non-Branching, Catalase-Positive, Gram-Positive Bacilli 283
15 and similar organisms 283
Objectives 283
General characteristics 283
Bacillus anthracis 283
Epidemiology 284
Pathogenesis and spectrum of disease 284
B. cereus group (not b. anthracis) 286
Epidemiology 286
Part IV Parasitology 590
46 Overview of the methods and strategies in parasitology 590
Objectives 590
Epidemiology 590
Pathogenesis and spectrum of disease 593
Laboratory diagnosis 601
Specimen collection and transport 601
Specimen processing 601
Approach to identification 606
Microscopic examination 608
Intestinal tract 614
Ova and parasite examination 614
Recovery of the tapeworm scolex 615
Examination for pinworm 616
Sigmoidoscopy material 619
Duodenal drainage 619
Duodenal capsule technique (entero-test) 620
Urogenital tract specimens 620
Sputum 620
Aspirates 620
Biopsy specimens 621
Blood 621
Thin blood films 623
Thick blood films 623
Buffy coat films 625
Direct detection methods 625
Intestinal parasites 625
Blood parasites 625
Cultivation 625
Larval-stage nematodes 627
Blood protozoa 627
Serodiagnosis 627
Prevention 627
47 Intestinal protozoa 629
Objectives 629
Amoebae 629
Entamoeba histolytica 629
General characteristics 629
Epidemiology 636
Pathogenesis and spectrum of disease 637
Asymptomatic infection 637
Intestinal disease 637
Hepatic disease 639
Metastatic amebiasis 639
Laboratory diagnosis 641
Routine methods 641
Antigen detection 641
Histology 641
Molecular methods 641
Antibody (serologic) detection 642
Reporting of results 642
Therapy 642
Asymptomatic infection 642
Prevention 642
Entamoeba coli 642
General characteristics 642
Epidemiology 643
Pathogenesis and spectrum of disease 643
Laboratory diagnosis 644
Therapy 644
Prevention 644
Entamoeba hartmanni 644
General characteristics 644
Epidemiology 644
Part V Mycology 757
58 Overview of fungal identification methods and strategies 757
Objectives 757
Epidemiology 758
General features of the fungi 758
Taxonomy of the fungi 758
Clinical classification of the fungi 759
Practical working schema 760
Pathogenesis and spectrum of disease 762
Laboratory diagnosis 762
Collection, transport, and culturing of clinical specimens 762
Respiratory tract secretions 763
Cerebrospinal fluid 763
Blood 763
Eye (corneal scrapings or vitreous humor) 763
Hair, skin, and nail scrapings 764
Vaginal 764
Urine 764
Tissue, bone marrow, and sterile body fluids 764
Culture media and incubation requirements 764
Direct microscopic examination 767
Serologic testing 770
Molecular methods 771
Matrix-assisted laser desorption ionization mass spectrometry 771
General considerations for the identification of yeasts 771
General considerations for the identification of molds 772
General morphologic features of the molds 774
Clinical relevance for fungal identification 776
Laboratory safety 779
Prevention 780
Bibliography 780
59 Hyaline molds, mucorales, entomophthorales, dermatophytes, and opportunistic and systemic mycoses 782
Objectives 782
The mucorales 782
General characteristics 782
Epidemiology and pathogenesis 783
Spectrum of disease 783
Laboratory diagnosis 783
Specimen collection, transport, and processing 783
Direct detection methods 783
Stains 784
Antigen-protein 784
Molecular methods 784
Cultivation 784
Approach to identification 785
Serologic testing 785
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry 786
The entomophthorales 786
General characteristics 786
Epidemiology and pathogenesis 786
Spectrum of disease 786
Laboratory diagnosis 786
Specimen collection, transport, and processing 786
Direct detection methods 786
Antigen-protein 786
Molecular methods 786
Cultivation 786
Approach to identification 786
Serologic testing 787
The dermatophytes 787
General characteristics 787
Epidemiology and pathogenesis 787
Spectrum of disease 787
Trichophyton spp. 787
Laboratory diagnosis 787
Specimen collection, transport, and processing 787
Direct detection methods 787
Stains 787
Antigen-protein 787
Molecular methods 788
Cultivation 788
Approach to identification 790
Trichophyton spp. 790
Microsporum spp. 792
Epidermophyton sp. 793
Serologic testing 793
The opportunistic mycoses 793
General characteristics 793
Epidemiology and pathogenesis 793
Aspergillus spp. 793
Pathogenesis and spectrum of disease 794
Aspergillus spp. 794
Fusarium spp. and other hyaline septate opportunistic molds 794
Laboratory diagnosis 795
Specimen collection, transport, and processing 795
Direct detection methods 795
Stains 795
Antigen-protein 795
Molecular methods 795
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry 795
Cultivation 795
Approach to identification 796
Aspergillus spp. 796
Serologic testing 796
Fusarium spp. 797
Geotrichum candidum 797
Acremonium spp. 797
Penicillium spp. and talaromyces marneffei 797
Paecilomyces spp. 798
Purpureocillium spp. 798
Scopulariopsis spp. 798
Serologic testing 798
Systemic mycoses 798
General characteristics 799
Epidemiology 799
Blastomyces spp. 799
Coccidioides spp. 799
Emmonsia spp. 799
Histoplasma capsulatum 799
Paracoccidioides brasiliensis 799
Talaromyces marneffei 800
Sporothrix spp. 800
Pathogenesis and spectrum of disease 800
Blastomyces spp. 800
Coccidioides spp. 800
Emmonsia spp. 800
Histoplasma capsulatum 800
Paracoccidioides brasiliensis 800
Talaromyces marneffei 801
Sporothrix spp. 801
Laboratory diagnosis 801
Specimen collection, transport, and processing 801
Direct detection methods 801
Stains 801
Blastomyces spp. 801
Coccidioides spp. 801
Emmonsia spp. 801
Histoplasma capsulatum. 801
Paracoccidioides brasiliensis. 801
Talaromyces marneffei.  803
Sporothrix spp. 803
Antigen-protein 803
Molecular methods 803
Cultivation 803
Blastomyces dermatitidis. 803
Coccidioides spp. 803
Emmonsia spp. 803
Histoplasma capsulatum. 803
Paracoccidioides brasiliensis.  804
Talaromyces marneffei.  804
Sporothrix spp. 804
Approach to identification 805
Blastomyces dermatitidis 805
Coccidioides spp. 805
Emmonsia spp. 806
Histoplasma capsulatum 806
Paracoccidioides brasiliensis 806
Talaromyces marneffei 806
Sporothrix spp. 807
Serologic testing 807
References 810
Bibliography 810
60 Dematiaceious (melanized) molds 812
Objectives 812
General characteristics 812
Epidemiology and pathogenesis 812
Superficial infections 812
Mycetoma 812
Chromoblastomycosis 813
Phaeohyphomycosis 813
Pathogenesis and spectrum of disease 813
Laboratory diagnosis 815
Specimen collection, transport, and processing 815
Direct detection method 815
Stains 815
Superficial infections 815
Chromoblastomycosis 815
Mycetoma and phaeohyphomycosis 815
Serologic testing 815
Molecular methods 815
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry 816
Cultivation 816
Superficial infections 816
Mycetoma 816
White grain mycetoma. 816
Black grain mycetoma. 816
Chromoblastomycosis 816
Phaeohyphomycosis 817
Approach to identification 817
Superficial infections 817
Mycetoma 817
White grain mycetoma: pseudallescheria boydii and acremonium spp. 817
Black grain mycetoma: exophiala jeanselmei, curvularia spp., and madurella spp. 818
Chromoblastomycosis: cladosporium, phialophora, and fonsecaea spp. 818
Phaeohyphomycosis: alternaria, bipolaris, cladophialophora, curvularia, exophiala, exserohilum, and phialophora spp. 819
Alternaria spp. 819
Bipolaris spp. 819
Cladophialophora spp. 819
Curvularia spp. 819
Exophiala spp. 819
Exserohilum spp. 819
Antifungal susceptibilities 820
Bibliography 821
61 Opportunistic atypical fungus: 822
Objectives 822
General characteristics 822
Epidemiology 822
Pathogenesis and spectrum of disease 822
Laboratory diagnosis 823
Specimen collection and transport 823
Specimen processing 823
Direct detection methods 823
Stains 823
Direct detection of (1-3)-beta-d-glucan 824
Molecular methods 824
Cultivation 824
Approach to identification 824
Serologic testing 824
References 824
Bibliography 824
62 The yeasts 825
Objectives 825
General characteristics 825
Epidemiology 826
Blastoschizomyces spp. 826
Candida spp. 827
Cryptococcus spp. 827
Malassezia, pseudozyma, rhodotorula, saccharomyces, sporobolomyces, and trichosporon spp. 827
Pathogenesis and spectrum of disease 827
Blastoschizomyces spp. 827
Candida albicans 827
Non-albicans candida 828
Cryptococcus neoformans 828
Genus cryptococcus 828
Cryptococcus gattii 829
Malassezia spp. 829
Pseudozyma spp. 829
Rhodotorula spp. 829
Saccharomyces cerevisiae 829
Sporobolomyces spp. 830
Trichosporon spp. 830
Laboratory diagnosis 830
Specimen collection, transport, and processing 830
Stains 830
Candida spp. 830
Cryptococcus spp. 830
Malassezia spp. 831
Trichosporon spp. 831
Antigen detection 831
Molecular methods 831
Cultivation 832
Part VI Virology 844
64 Overview of the methods and strategies in virology 844
Objectives 844
General characteristics 845
Viral structure 845
Virus taxonomy 847
Viral replication 847
Epidemiology 848
Pathogenesis and spectrum of disease 848
Prevention and therapy 849
Antiviral agents 849
Viruses that cause human diseases 849
Laboratory diagnosis 849
Designing a clinical virology laboratory 849
Specimen selection and collection 851
General principles 851
Throat, nasopharyngeal swab, or aspirate 852
Bronchial and bronchoalveolar washes 855
Rectal swabs and stool specimens 855
Urine 855
Skin and mucous membrane lesions 855
Sterile body fluids other than blood 855
Blood 855
Bone marrow 855
Tissue 856
Genital specimens 856
Serum for antibody testing 856
Specimen transport and storage 856
Specimen processing 856
General principles 856
Processing based on specimen type 858
Lip and genital specimens 858
Urine 858
Stool 858
Respiratory tract 858
Specimens from neonatal patients 859
Cerebrospinal fluid 859
Blood 859
Processing based on requests for specific viruses 859
Arboviruses 859
Cytomegalovirus 859
Enteroviruses 860
Epstein-barr virus 860
Hepatitis viruses 860
Herpes simplex virus 861
Human immunodeficiency virus and other retroviruses 861
Influenza a and b viruses 862
Pediatric respiratory viruses 862
Gastroenteritis viruses 864
Torch 864
Varicella-zoster virus 864
Virus detection methods 866
Cytology and histology 866
Electron microscopy 866
Immunodiagnosis (antigen detection) 866
Enzyme-linked virus-inducible system 871
Molecular methods 871
Cell culture 872
Conventional cell culture 872
Shell vial cell culture 874
Identification of viruses detected in cell culture 875
Serologic testing 875
General principles 875
Immune status testing 878
Serology panels 879
Preservation and storage of viruses 879
Bibliography 879
65 Viruses in human disease 881
Objectives 881
Viruses in human disease 881
Adenoviruses 881
Arenaviruses 883
Bunyaviruses 884
Caliciviruses 885
Coronaviruses 886
Filoviruses 887
Flaviviruses 888
Hepevirus 890
Hepadnaviruses 891
Herpes viruses 892
Orthomyxoviruses 897
Papillomaviruses 899
Paramyxoviruses 900
Parvoviruses 902
Picornaviruses 903
Polyomaviruses 905
Poxviruses 906
Reoviruses 907
Retroviruses 908
Rhabdoviruses 910
Togaviruses 911
Miscellaneous viruses 911
Interpretation of laboratory test results 911
Viruses in tissue and body fluids 911
Viruses in the respiratory tract 911
Viruses in the eye 912
Detection of epstein-barr virus 912
Detection of enteroviruses 912
Detection of hepatitis viruses 912
Detection of varicella-zoster virus and herpes simplex virus 912
Detection of cytomegalovirus 913
Detection of human immunodeficiency virus 913
Prions in human disease 913
Bibliography 914
66 Antiviral therapy, susceptibility testing, and prevention 916
Objectives 916
Antiviral therapy 916
Antiviral resistance 916
Methods of antiviral susceptibility testing 917
Phenotypic assays 917
Plaque reduction assay 917
Dye uptake assay 917
Deoxyribonucleic acid hybridization 917
Enzyme immunoassay 918
Flow cytometry 918
Neuraminidase inhibition assay 918
Recombinant virus assays 918
Genotypic susceptibility assays 918
Pyrosequencing 918
Next generation sequencing 919
Human immunodeficiency virus 919
Influenza 919
Prevention of other viral infections 920
Vaccination 920
Immune prophylaxis and therapy 921
Eradication 922
Bibliography 922
Part VII Diagnosis by Organ System 924
67 Bloodstream infections 924
Objectives 924
General considerations 925
Etiology 925
Bacteria 925
Fungi 926
Parasites 926
Viruses 926
Types of bacteremia 926
Types of bloodstream infections 927
Intravascular infections 927
Endocarditis 927
Mycotic aneurysm and suppurative thrombophlebitis 927
Intravenous catheter–associated bacteremia. 927
Extravascular infections 928
Clinical manifestations 930
Immunocompromised patients 931
Detection of bacteremia 931
Specimen collection 931
Preparation of the site 931
Antisepsis 931
Precautions 932
Specimen volume 932
Adults 932
Children 932
Number of blood cultures 932
Timing of collection 932
Miscellaneous matters 932
Anticoagulation 932
Dilution 933
Blood culture media 933
Types of blood culture bottles 933
Culture techniques 933
Conventional blood cultures 933
Incubation conditions 933
Self-contained subculture system 934
Lysis centrifugation 934
Instrument-based systems 934
Bactec systems 934
Bact/alert microbial detection system 936
Versa trek system 936
Techniques to detect intravenous catheter–associated infections 936
Handling positive blood cultures 937
Interpretation of blood culture results 938
Special considerations for other relevant organisms isolated from blood 938
Hacek (aacek) bacteria 938
Campylobacter and helicobacter 938
Fungi 938
Mycobacteria 939
Brucella 939
Spirochetes 939
Borrelia 939
Leptospira 939
Vitamin b6–dependent streptococci 939
Mycoplasma hominis 939
Bartonella 940
Bibliography 940
68 Infections of the lower respiratory tract 942
Objectives 942
General considerations 942
Anatomy 942
Pathogenesis of the respiratory tract: Basic concepts 943
Host factors 943
Microorganism virulence factors 944
Adherence 944
Toxins 944
Microorganism growth 945
Avoiding the host response 945
Diseases of the lower respiratory tract 945
Bronchitis 945
Acute 945
Chronic versus acute 946
Bronchiolitis 946
Pneumonia 946
Pathogenesis 947
Clinical manifestations 947
Epidemiology and etiologic agents 947
Community-acquired pneumonia 947
Children. 947
Young adults. 947
Adults (viral pneumonia) 949
Adults (fungal pneumonia) 949
Chronic lower respiratory tract infections 949
Immunocompromised patients 949
Patients with neoplasms. 949
Transplant recipients. 949
Patients with human immunodeficiency virus. 949
Pleural infections 950
Laboratory diagnosis of lower respiratory tract infections 950
Specimen collection and transport 950
Sputum 951
Expectorated 951
Induced 951
Endotracheal or tracheostomy suction specimens 951
Bronchoscopy 951
Transtracheal aspirates 952
Other invasive procedures 952
Specimen processing 952
Direct visual examination 952
Routine culture 955
Bibliography 955
69 Upper respiratory tract infections and other infections of the oral cavity and neck 957
Objectives 957
General considerations 957
Anatomy 957
Pathogenesis 957
Diseases of the upper respiratory tract, oral cavity, and neck 957
Upper respiratory tract 957
Laryngitis 957
Laryngotracheobronchitis 958
Epiglottitis 958
Pharyngitis, tonsillitis, and peritonsillar abscesses 958
Pharyngitis and tonsillitis 958
Clinical manifestations. 958
Pathogenesis. 958
Epidemiology and etiologic agents. 958
Peritonsillar abscesses 960
Rhinitis 960
Miscellaneous infections caused by other agents 960
Corynebacterium diphtheriae 960
Bordetella pertussis 960
Klebsiella spp. 960
Oral cavity 960
Stomatitis 960
Thrush 961
Periodontal infections 961
Types 961
Etiologic agents 961
Salivary gland infections 961
Neck 961
Diagnosis of upper respiratory tract infections 961
Collection and transport of specimens 961
Direct visual examination or detection 962
Culture 963
Streptococcus pyogenes (beta-hemolytic group a streptococci) 963
Corynebacterium diphtheriae 963
Bordetella pertussis 963
Neisseria spp. 963
Epiglottitis 963
Diagnosis of infections in the oral cavity and neck 963
Collection and transport 963
Direct visual examination 964
Culture 964
Bibliography 964
70 Meningitis and other infections of the central nervous system 965
Objectives 965
General considerations 965
Anatomy 965
Coverings and spaces of the central nervous system 965
Cerebrospinal fluid 966
Routes of infection 966
Diseases of the central nervous system 966
Meningitis 966
Purulent meningitis 966
Pathogenesis. 966
Clinical manifestations. 966
Acute. 968
Chronic. 968
Epidemiology and etiologic agents of acute meningitis. 968
Aseptic meningitis 969
Encephalitis/meningoencephalitis 969
Viral encephalitis 970
Parasitic infections 970
Brain abscess 970
Shunt infections 970
Laboratory diagnosis of central nervous system infections 971
Meningitis 971
Specimen collection and transport 971
Initial processing 971
Cerebrospinal fluid laboratory results 971
Visual detection of etiologic agents 972
Stained smear of sediment 972
Wet preparation 972
India ink stain 972
Direct detection of etiologic agents 972
Antigen 972
Bacteria. 972
Cryptococcus neoformans. 972
Molecular methods 973
Miscellaneous tests 973
Culture 974
Bacteria and fungi 974
Parasites and viruses 974
Brain abscess/biopsies 974
Specimen collection, transport, and processing. 974
Bibliography 975
71 Infections of the eyes, ears, and sinuses 976
Objectives 976
Eyes 976
Anatomy 976
Resident microbiota 976
Diseases 977
Pathogenesis 977
Epidemiology and etiology of disease 977
Blepharitis 977
Conjunctivitis 977
Keratitis 979
Endophthalmitis 980
Periocular 980
Uveitis 981
Other infections 981
Laboratory diagnosis 982
Specimen collection and transport 982
Direct visual examination 982
Culture 982
Nonculture methods 983
Ears 983
Anatomy 983
Resident microbiota 983
Diseases, epidemiology, and etiology of disease 983
Otitis externa (external ear infections) 983
Otitis media (middle ear infections) 984
Pathogenesis 984
Laboratory diagnosis 984
Specimen collection and transport 984
Direct visual examination 984
Culture and nonculture methods 984
Sinuses 984
Anatomy 984
Diseases 985
Pathogenesis 985
Epidemiology and etiology of disease 985
Laboratory diagnosis 985
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry 986
Bibliography 986
72 Infections of the urinary tract 987
Objectives 987
General considerations 987
Anatomy 987
Resident microbiota of the urinary tract 987
Infections of the urinary tract 988
Epidemiology 988
Etiologic agents 988
Community-acquired 988
Hospital- and health care–associated 988
Miscellaneous 989
Pathogenesis 989
Routes of infection 989
The host-pathogen relationship 990
Types of infection and their clinical manifestations 991
Urethritis 991
Ureteritis 991
Asymptomatic bacteriuria 991
Cystitis 992
Acute urethral syndrome 992
Pyelonephritis 992
Urosepsis 992
Laboratory diagnosis of urinary tract infections 992
Specimen collection 992
Clean-catch midstream urine 992
Straight catheterized urine 992
Suprapubic bladder aspiration 993
Indwelling catheter 993
Specimen transport 993
Screening procedures 993
Gram or methylene blue stain 993
Pyuria 994
Indirect indices 994
Nitrate reductase (greiss) test 994
Leukocyte esterase test 994
Catalase 994
Automated and semiautomated systems 994
General comments regarding screening procedures 994
Urine culture 995
Inoculation and incubation of urine cultures 995
Interpretation of urine cultures 995
Bibliography 998
73 Genital tract infections 999
Objectives 999
General considerations 999
Anatomy 999
Resident microbiota 999
Sexually transmitted diseases and other genital tract infections 1000
Genital tract infections 1001
Sexually transmitted diseases and other lower genital tract infections 1001
Epidemiology and etiologic agents 1001
Routes of transmission 1001
Sexually transmitted 1001
Other routes 1002
Clinical manifestations 1002
Asymptomatic 1002
Dysuria 1002
Urethral discharge 1002
Lesions of the skin and mucous membranes 1002
Vaginitis 1004
Cervicitis 1005
Anorectal lesions 1005
Bartholinitis 1005
Infections of the reproductive organs and other upper genital tract infections 1005
Females 1005
Pelvic inflammatory disease 1006
Infections after gynecologic surgery 1006
Infections associated with pregnancy 1006
Males 1007
Gonorrhea 1007
Syphilis 1007
Laboratory diagnosis of genital tract infections 1007
Lower genital tract infections 1007
Urethritis, cervicitis, and vaginitis 1007
Specimen collection 1007
Urethral. 1007
Cervical and vaginal. 1007
Transport. 1007
Direct microscopic examination 1009
Culture 1010
Nonculture methods 1011
Genital skin and mucous membrane lesions 1011
Buboes 1012
Infections of the reproductive organs 1012
Pelvic inflammatory disease 1012
Miscellaneous infections 1012
Infections of neonates and human products of conception 1012
Bibliography 1013
74 Gastrointestinal tract infections 1015
Objectives 1015
Anatomy 1015
Resident gastrointestinal microbiome 1017
Gastroenteritis 1017
Pathogenesis 1018
Host factors 1018
Microbial factors 1018
Primary pathogenic mechanisms 1018
Toxins 1019
Enterotoxins. 1019
Cytotoxins. 1019
Neurotoxins. 1020
Attachment. 1020
Invasion. 1020
Miscellaneous virulence factors 1023
Clinical manifestations 1023
Epidemiology 1024
Institutional settings 1024
Traveler’s diarrhea 1024
Foodborne and waterborne outbreaks 1024
Immunocompromised hosts 1025
Etiologic agents 1025
Other infections of the gastrointestinal tract 1025
Esophagitis 1025
Gastritis 1025
Proctitis 1028
Miscellaneous 1028
Laboratory diagnosis of gastrointestinal tract infections 1028
Specimen collection and transport 1028
General comments 1028
Stool specimens for bacterial culture 1028
Stool specimens for ova and parasites 1029
Stool specimens for viruses 1029
Miscellaneous specimen types 1029
Direct detection of agents of gastroenteritis in feces 1029
Wet mounts 1029
Stains 1029
Antigen detection 1029
Molecular methods 1029
Culture of fecal material for isolation of etiologic agents 1030
Bacteria 1030
Organisms for routine culture 1030
Routine culture methods 1030
Salmonella and shigella. 1030
Campylobacter. 1030
Enrichment broths. 1030
Laboratory diagnosis of clostridium difficile–associated diarrhea 1032
Bibliography 1033
75 Skin, soft tissue, and wound infections 1034
Objectives 1034
General considerations 1034
Anatomy of the skin 1034
Function of the skin 1034
Prevalence, etiology, and pathogenesis 1035
Skin and soft tissue infections 1035
Infections of the epidermis and dermis 1035
Infections in or around hair follicles 1035
Infections in the keratinized layer of the epidermis 1035
Infections in the deeper layers of the epidermis and dermis 1036
Infections of the subcutaneous tissues 1036
Infections of the muscle fascia and muscles 1039
Necrotizing fasciitis 1039
Progressive bacterial synergistic gangrene 1039
Myositis 1039
Wound infections 1039
Postoperative infections 1039
Bites 1040
Burns 1040
Special circumstances regarding skin and soft tissue infections 1040
Infections related to vascular and neurologic problems 1041
Sinus tracts and fistulas 1041
Systemic infections and skin manifestations 1042
Laboratory diagnostic procedures 1042
Infections of the epidermis and dermis 1042
Erysipeloid 1042
Superficial mycoses and erythrasma 1042
Erysipelas and cellulitis 1043
Vesicles and bullae 1043
Infections of the subcutaneous tissues 1043
Infections of the muscle fascia and muscles 1043
Wound infections 1043
Postoperative 1043
Bites 1043
Burns 1043
Bibliography 1045
76 Normally sterile body fluids, bone and bone marrow, and solid tissues 1046
Objectives 1046
Specimens from sterile body sites 1046
Fluids 1046
Pleural fluid 1046
Peritoneal fluid 1047
Primary peritonitis 1048
Secondary peritonitis 1048
Peritoneal dialysis fluid 1049
Pericardial fluid 1049
Joint fluid 1049
Bone 1050
Bone marrow aspiration or biopsy 1050
Bone biopsy 1050
Solid tissues 1051
Laboratory diagnostic procedures 1051
Specimen collection and transport 1051
Fluids and aspirates 1051
Bone 1052
Tissue 1052
Specimen processing, direct examination, and culture 1053
Fluids and aspirates 1053
Bone 1053
Solid tissue 1054
Bibliography 1054
Part VIII Clinical Laboratory Management 1055
77 Quality in the clinical microbiology laboratory 1055
Objectives 1055
Quality program 1056
Specimen collection and transport 1056
Standard operating procedure manual 1057
Personnel 1057
Reference laboratories 1057
Patient reports 1057
Proficiency testing 1057
Performance checks 1058
Instruments 1058
Commercially prepared media exempt from quality control 1058
User-prepared and nonexempt, commercially prepared media 1058
Antimicrobial susceptibility tests 1058
Stains and reagents 1059
Antisera 1059
Kits 1059
Maintenance of quality control records 1059
Maintenance of reference quality control stocks 1059
Bacteriology 1059
Mycology 1059
Mycobacteriology 1060
Virology 1060
Parasitology 1060
Quality assurance program 1060
Types of quality assurance audits 1060
Conducting a quality assurance audit 1061
Continuous daily monitoring 1061
Bibliography 1061
78 Infection control 1063
Objectives 1063
Incidence of health care–associated infections 1064
Types of health care–associated infections 1064
Urinary tract infections 1064
Lung infections 1065
Surgical site infections 1065
Central line–associated bloodstream infection 1065
Emergence of antibiotic-resistant microorganisms 1065
Hospital infection control programs 1065
Role of the microbiology laboratory 1066
Characterizing strains involved in an outbreak 1066
Preventing health care–associated infections 1068
Surveillance methods 1070
Bibliography 1070
79 Sentinel laboratory response to bioterrorism 1072
Objectives 1072
General considerations 1072
Bio crime 1072
Government laws and regulations 1072
Biosecurity 1073
Laboratory response network 1073
Role of the sentinel laboratory 1074
Bibliography 1076
Glossary 1077
Index 1084
A 1084
B 1087
C 1089
D 1093
E 1093
F 1095
G 1096
H 1097
I 1099
J 1100
K 1100
L 1100
M 1101
N 1104
O 1105
P 1105
Q 1108
R 1108
S 1109
T 1112
U 1113
V 1114
W 1114
X 1115
Y 1115
Z 1115