Age Group
A category of people defined by a similar age range.
Glossary A–Z
Published canonical terms. Aliases redirect to canonical pages.
Agent
A disease-causing or health-affecting factor involved in the occurrence of illness.
Antibiotic
A drug used to kill or inhibit the growth of susceptible bacteria.
Antibody
A protein produced by the immune system in response to a specific antigen.
Attack Rate
A cumulative incidence measure used in outbreak settings.
Attitude
A person's settled way of thinking or feeling that may influence health behavior.