Chapter 14: Infection, Infectious Diseases and Epidemiology

Symbiotic Relationships Between Microbes and Their Hosts

Types of symbiosis
Normal microbiota in hosts
How normal microbiota become opportunistic pathogens

The Movement of Microbes into Hosts: Infection

Exposure to microbes: Contamination and infection
Portals of entry
The role of adhesion in infection

The Nature of Infectious Disease

Manifestations of disease: Symptoms, signs and syndromes
Causation of disease: Etiology
Virulence factors of infectious agents
The stages of infectious disease

The Movement of Pathogens Out of Hosts: Portals of Exit

Sources of Infectious Disease in Humans

Animal reservoirs
Human carriers
Nonliving reservoirs

Modes of Infectious Disease Transmission

Classification of Infectious Diseases

Epidemiology of Infectious Diseases

Frequency of disease
Epidemiological studies
Hospital epidemiology: Nosocomial infections
Epidemiology and public health

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