Principles of Disease and Epidemiology

Severity of a disease

Acute

Chronic

Subacute

Latent

Patterns of disease

Source of pathogen

susceptible host

Invesion

Pathogenesis

Extent of host involvement

Infection

Local

Systemic

Focal

Infection type

Primary

Secondary

Sepsis

Bacteremia

Septicemia

Toxemia

Viremia

Subclinical disease

Development of disease

Incubation period

Prodromal period

Period of illness

Period of decline

Period of recovery

Spread of infection

Human

Animal

Non living

Important definitions

Pathology

Etiology

Infection

Pathogenesis

Disease

Microbiota

Normal - constant

transient

Infectious diseases

Communicable

Contagious

Non communicable

Occurance of disease

Incidence

Prevalance

Sporadic

Endemic

Epidemic

Pandemic

Epideniology

Analytical

Descriptive

Experimental

EIDS

Definition

Contributing factors

Transmission of disease

Mechanical

Biological