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Professional
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MSD Manual
Consumer Version
HEALTH TOPICS
HEALTHY LIVING
SYMPTOMS
EMERGENCIES
RESOURCES
COMMENTARY
ABOUT US
HEALTH TOPICS
HEALTHY LIVING
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Infections
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Biology of Infectious Disease
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Biology of Infectious Disease
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Overview of Infectious Disease
Effects and Symptoms of Infection
Resident Flora
Development of Infection
Production of toxins and enzymes
Blockage of the body's defenses
Malfunction of the immune system
Defenses Against Infection
Natural Barriers Against Infection
The Blood
Inflammation
Immune Response
Fever
Fever in Adults
Consequences of fever
Causes
Infectious causes
Neoplastic causes
Inflammatory causes
Risk factors
Evaluation
Warning signs
When to see a doctor
What the doctor does
Testing
Fever of unknown origin (FUO)
Treatment
Essentials for Older People
Key Points
Prevention of Infection
More Information
Infections in People With Impaired Defenses