Table 1.

Exposure process types

Exposure process category	Exposure process type
Administration	Vaccination
Administration	Infectious challenge
Administration	Transplantation
Occurrence of disease	Infectious disease
Occurrence of disease	Allergic disease
Occurrence of disease	Autoimmune disease
Occurrence of disease	Cancer
Exposure without disease	Asymptomatic infection
Exposure without disease	Exposure with immune reactivity
Exposure without disease	Documented exposure
Exposure without disease	Exposure to ubiquitous agent