Possible side effect or reaction after getting a shot or taking medicine

A natural or living thing (biologica) or chemical that can cause an event or result such as disesase, illness, or death

The composition of air with respect to quantities of pollution therein; used most frequently in connection with "standards" of maximum acceptable pollutant concentrations. Used instead of "air pollution" when referring to programs.

Bacteria: 1) tiny one-celled organisms present throughout the environment that require a microscope to be seen. While not all bacteria are harmful, some cause disease.; 2) germs or “bugs” that can infect people, animals, plants, other living things, soil, water, and other parts of the environment; germs that grow and can cause sickness; we can treat these sicknesses with medicines called antibiotics. Virus: germs that need a host, which is a living thing, such as people, animals, or plants, to survive.

Something that causes cancer

A type of sickness that goes on for a long time and often doesn’t go away completely. People’s symptoms may be better or worse over time, and they may use treatments to control symptoms and feel better.

A situation in which a sufficient proportion of a population is immune to an infectious disease (through vaccination and/or prior illness) to make its spread from person to person unlikely. Even individuals not vaccinated (such as newborns and those with chronic illnesses) are offered some protection because the disease has little opportunity to spread within the community. Also known as herd immunity.

Proximity to or interaction with a person who is or was sick

When germs have the ability to spread from a person or animal to another person or animal

A collection of information or list about a group of people with a specific sickness; system for recording or tracking specific sicknesses