| Preface | 6 |
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| Acknowledgments | 7 |
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| Contents | 8 |
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| Contributors | 10 |
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| Infections in the Immunocompromised | 13 |
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| 1 Introduction | 13 |
| 2 Types of Immunodeficiency and Infection | 13 |
| 3 Site of Infection | 14 |
| 4 Respiratory Tract | 15 |
| 4.1 Pneumocystis jiroveci Pneumonia (PCP) | 16 |
| 4.2 Viruses | 17 |
| 5 Gut | 18 |
| 5.1 Viruses | 18 |
| 5.2 Cryptosporidium | 19 |
| 5.3 Giardia | 19 |
| 6 Disseminated Infection | 19 |
| 6.1 Adenovirus | 20 |
| 6.2 Cytomegalovirus | 21 |
| 6.3 Epstein Barr Virus | 21 |
| 6.4 Human Herpes Virus 6 | 22 |
| 6.5 Varicella Zoster Virus | 22 |
| 7 Fungal Infections | 22 |
| 7.1 Candidiasis | 23 |
| 7.2 Aspergillosis | 24 |
| 8 Central Venous Catheter Infections | 24 |
| 9 Febrile Neutropenia | 25 |
| 10 Conclusions | 27 |
| References | 28 |
| Host Biomarkers and Paediatric Infectious Diseases: From Molecular Profiles to Clinical Application | 31 |
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| 1 Introduction | 31 |
| 2 Molecular Profiling: Current Techniques | 32 |
| 2.1 Genomics | 32 |
| 2.2 Transcriptomics | 33 |
| 2.3 Proteomics | 33 |
| 3 Clinical Applications in Pediatric Infectious Diseases | 34 |
| 3.1 What Has Been Studied up to now? | 34 |
| 3.2 Current and Potential Clinical Applications of ''''omic'' Technologies | 37 |
| 3.3 Future Perspectives for Biomarker Development | 39 |
| 4 Conclusions | 40 |
| References | 41 |
| The Epidemiology and Management of Non Typhoidal Salmonella Infections | 44 |
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| 1 Introduction | 44 |
| 2 Seasonality of NTS infections | 49 |
| 3 Malaria, Anemia and NTS infection | 50 |
| 4 Malnutrition and NTS Infection | 50 |
| 5 HIV and NTS infection | 51 |
| 6 NTS Recurrence and Relapse | 51 |
| 7 Treatment of NTS Infections | 51 |
| References | 52 |
| Where Does Campylobacter Come From? A Molecular Odyssey | 58 |
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| 1 Introduction | 58 |
| 2 Campylobacter Typing and Population Structure | 59 |
| 3 Epidemiology of Human Infection | 60 |
| 4 Host Association Studies of Chickens, Geese and Starlings | 61 |
| 5 Genetics of Host Association and Speciation | 63 |
| 6 Conclusion Impact of Molecular Epidemiology on Control of Human Infection | 64 |
| References | 65 |
| Why Are Some Babies Still Being Infected with HIV in the UK? | 68 |
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| 1 Introduction | 68 |
| 2 Risk Factors for Transmission | 68 |
| 3 British HIV Association Guidelines 2008 | 70 |
| 4 Transmission in the Era of HAART | 71 |
| 5 Clinical Scenario Emergency Management of a New Diagnosis of Maternal HIV at Delivery | 75 |
| 5.1 What Should be Done Before the Baby Is Born? | 75 |
| 5.2 Which Antiretrovirals Should be Started for the Baby? | 75 |
| 5.3 What Should be Done if the Mother is in Premature Labour? | 77 |
| 5.4 How Should the Infant be Tested for HIV? | 77 |
| 5.5 When Should Cotrimoxazole Prophylaxis be Started? | 77 |
| 5.6 What Is the Appropriate Management of a Mother Diagnosed with HIV Antenatally Who Has R efused Any Interventions? | 78 |
| 6 Conclusions | 78 |
| References | 79 |
| The Use and Abuse of Antibiotics and the Developmentof Antibiotic Resistance | 83 |
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| 1 Introduction | 83 |
| 2 Antibiotic Resistance Is Inevitable | 83 |
| 3 Antibiotic Overuse and Misuse Is a Major Problem | 84 |
| 4 Antibiotic Use (and Abuse) Drives the Development of Resistance | 85 |
| 5 The Role of Antibiotic Use and Overuse in Facilitating the Emergence and Spread of Antibiotic-Resistant Pathogens Is Complex | 86 |
| 6 The Role of Antibiotic Use and Overuse in Facilitating the Emergence and Spread of Specific Antibiotic-Resistant Gram-Positive Pathogens in Pediatrics Pneumococci, Staphylococci and Enterococci | 86 |
| 6.1 Penicillin and Cephalosporin-Resistant Streptococcus pneumoniae | 86 |
| 6.2 Community-Associated, Methicillin-Resistant Staphylococcus aureus (CA-MRSA) | 87 |
| 6.3 Vancomycin-Resistant Enterococci ( VRE ) | 88 |
| 7 Promoting Rational and Judicious Antibiotic Use | Is This a Pipe Dream? |
| 8 Summary, Conclusions, and Recommendations | 89 |
| References | 90 |
| Vaccination Against Varicella: Whats the Point? | 93 |
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| 1 Introduction | 93 |
| References | 96 |
| What Can We Learn from the Retina in Severe Malaria? | 98 |
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| 1 Introduction | 98 |
| 2 Malarial Retinopathy The Components | 98 |
| 3 How to See Malarial Retinopathy | 100 |
| 4 The Prognostic Value of Retinopathy | 102 |
| 5 Malarial Retinopathy in Clinical Practice and Research | 102 |
| 6 Retinal Angiography in CM | 103 |
| 7 Pathogenesis of Retinal Findings and Potential Relevance to the Pathogenesis of Cerebral Disease | 103 |
| 8 Summary | 105 |
| References | 106 |
| Epidemiology and Prevention of Neonatal Candidiasis: Fluconazole for All Neonates? | 107 |
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| 1 Scope of the Problem | 107 |
| 2 Risk Factors for ICI | 107 |
| 3 Incidence of ICI | 109 |
| 4 ICI Variation Among NICUs | 109 |
| 5 Candida Species and ICI | 110 |
| 6 Neurodevelopmental Impairment | 110 |
| 7 Mortality | 111 |
| 8 Costs of ICI | 112 |
| 9 Prompt and Empiric Treatment of ICI | 112 |
| 10 Prophylaxis | 112 |
| 10.1 Fluconazole | 112 |
| 10.2 Combined Outcome of ICI or Mortality | 116 |
| 10.3 Meta-Analysis and Cochrane Review | 116 |
| 10.4 Resistance and Safety | 117 |
| 10.5 Side Effects of Fluconazole Prophylaxis | 118 |
| 10.6 Cost-Benefit Ratio | 119 |
| 11 Nystatin | 119 |
| 12 Fluconazole or Nystatin? | 120 |
| 12.1 Class 1 Evidence for the Use of Fluconazole Prophylaxis | 120 |
| 13 Deciding Who is High-Risk | 120 |
| 14 Who Should Receive Antifungal Prophylaxis? | 120 |
| 15 Dosage and Schedule | 122 |
| 16 Summary | 122 |
| References | 123 |
| Current Status of Treatment of Hepatitis B in Children | 128 |
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| 1 Introduction | 128 |
| 2 Diagnosis and Natural History | 129 |
| 3 Management of Chronic HBV Infection | 129 |
| 4 Antiviral Therapy | 130 |
| 5 Aim of Treatment | 130 |
| 6 Indications for Treatment | 131 |
| 6.1 Interferon | 131 |
| 6.2 Lamivudine | 132 |
| 6.3 Adefovir Dipivoxil | 132 |