Aeromonas: Human Healh Criteria Document

0,95
MB

198
stron

5447
ID UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

2006
rok

Contents

Disclaimer v

Foreword vi

Acknowledgements vii

External Peer Review Workgroup viii

1 0 Executive Summary 1

1 1 General Information 1

1 2 Occurrence 2

1 3 Health Effects in Humans 2

1 4 Health Effects in Animals 5

1 5 Risk Assessment 5

1 6 Methods 6

1 7 Water Treatment 7

1 8 Indicators of Occurrence and Treatability7

2 0 General Information 8

2 1 History 8

2 2 Taxonomy 11

2 3 Description of the Genus 15

2 4 Methods19

Isolation and Enumeration from Environmental Samples 23

2 4 2 Isolation from Clinical Specimens 24

2 4 3 Culture Identification Methods 25

2 4 4 Molecular Detection Methods 29

2 4 5 Typing Methods 32

2 5 Summary 34

3 0 Occurrence 35

3 1 Worldwide Occurrence 36

3 1 1 Occurrence in Human Population 36

3 1 2 Occurrence in Animal Population 38

3 1 3 Occurrence in Water 41

3 1 4 Occurrence in Food 46

3 1 5 Occurrence in Other Media48

3 2 Environmental Factors Affecting Survival48

3 2 1 Survival in Water 49

3 2 2 Survival in Food 51

3 2 3 Viable but Non-culturable State 53

3 2 4 Preservation in Stock Cultures 54

3 3 Summary 54

4 0 Health Effect in Humans 55

4 1 Clinical Symptoms 56

4 1 1 Mechanism of Virulence 56

4 1 1 1 Cell-Associated Virulence Factors 59

4 1 1 2 Extracellular Virulence Factors 66

4 1 1 3 Type II Secretion Systems 76

4 1 1 4 Type III Secretion Systems 76

4 1 1 5 Siderophores 77

4 1 1 6 Quorum Sensing 78

4 1 1 7 Opsonins 78

4 1 1 8 Glycosylation 78

4 1 1 9 Suicide Phenomenon 79

4 1 1 10 Vacuolation 79

4 1 1 11 Pathogenicity Islands 79

4 1 2 Gastrointestinal Infection 80

4 1 3 Skin and Soft Tissue Infection 83

4 1 4 Respiratory Tract Infections 86

4 1 5 Meningitis 87

4 1 6 Endocarditis 87

4 1 7 Osteomyelitis 87

4 1 8 Hepatobiliary Infections 87

4 1 9 Bacteremia/Septicemia 88

4 1 10 Peritonitis 88

4 1 11 Hemorrhagic Uremic Syndrome 89

4 1 12 Ocular Infections 89

4 1 13 Septic Arthritis 90

4 2 Predisposing Factors 90

4 3 Chronic Conditions/Sequelae 90

4 4 Dose Response 91

4 5 Immunity/Vaccines 91

4 6 Therapeutic Measures 91

4 6 1 Antibiotic Treatment 92

4 6 2 Other Therapeutic Strategies 95

4 7 Sensitive Sub-populations 95

4 7 1 Elderly 95

4 7 2 Children 96

4 7 3 Immunocompromised 97

4 8 Summary 99

5 0 Health Effect in Animals 100

5 1 Clinical Symptoms 101

5 1 1 Mechanism of Action/Disease 101

5 1 2 Chronic Conditions/Sequelae 101

5 2 Dose Response 102

5 3 Immunity/Vaccines 102

5 4 Therapeutic Measures 102

5 4 1 Antibiotic Treatment 102

5 4 2 Other Therapeutic Measures 102

5 5 Sensitive Subpopulations 103

5 6 Summary 103

6 0 Epidemiology and Disease Outbreaks 103

6 1 Transmission Routes and Mechanisms 103

6 1 1 Foodborne Transmission 103

6 1 2 Waterborne Transmission 104

6 1 3 Person-to-person Transmission 105

6 1 4 Animal-to-person Transmission 105

6 1 5 Environmental Transmission 105

6 2 Disease Outbreaks 106

6 2 1 Outbreaks Associated with Drinking Water 106

6 2 2 Outbreaks Associated with Recreational Water 107

6 2 3 Outbreaks Associated with Other Water Sources 107

6 2 4 Food 107

6 2 5 Travelers 109

6 2 6 Other Sources 109

6 3 Summary 109

7 0 Risk Assessment 110

7 1 Risk Assessment Paradigms/Models 112

7 1 1 Assessment of Virulence Factors as an Indication of Risk 112

7 1 1 1 Studies Characterizing Virulence Markers in Clinical and Environmental Isolates 113

7 1 1 2 Studies Characterizing Virulence Markers in Clinical Isolates 115

7 1 1 3 Studies Characterizing Virulence Markers in Environmental Isolates 117

7 1 1 4 Studies Characterizing Virulence Markers in Food Isolates 119

7 1 1 5 Studies Characterizing Virulence Markers in Animal Isolates 123

7 2 Risk Assessment Case-Control Studies 123

7 2 1 Laboratory Studies 123

7 2 2 Studies in Younger Children 124

7 2 3 Field Studies 125

7 2 4 Animal Studies 125

7 2 5 Typing Studies 126

7 3 Risk Factors 126

7 4 Potential for Human Exposure 127

7 5 Risk Management 127

7 6 Summary 128

8 0 Water Treatment 129

8 1 Conventional Water and Wastewater Treatment 130

8 1 1 Slow Sand Filtration 130

8 1 2 Activated Sludge Plant/Trickling Filter Plant 131

8 1 3 Treatment Plants and Distribution Systems 131

8 1 4 Rapid Gravity Filters 132

8 2 Disinfection/Inactivation 132

8 2 1 Disinfection 134

8 2 2 Inactivation 135

8 2 3 Distribution Systems 135

8 2 4 Survival 136

8 3 Summary 137

9 0 Indicators for Occurrence and Treatability 137

9 1 Relationship of Aeromonads to Other Microbial Indicators 138

9 2 Summary 138

10 0 References 139