| A | B |
| Pathogens | disease causing agents |
| Toxin | a poisonous substance that can cause a disease |
| Pasteurization | the process of heating food to a high heat to destroy bacteria |
| Vaccine | made from dead or weakened pathogens and can prevent you from getting sick |
| Disease | anything that interferes with the normal functions of the body |
| Microorganisms | organisms that are too small to be seen with just the eye |
| Infectious disease | diseases that can be passed from one organism to another |
| Antibiotic | chemicals used to treat bacterial infections |
| Alexander Fleming | discovered the first antibiotic ever |
| Edward Jenner | discovered the first vaccine to prevent smallpox |
| Jonas Salk | developed a vaccine to prevent the viral disease polio |
| Louis Pasteur | developed the process of eliminating microbes from foods |