| A | B |
|---|
| Simple one-celled organishms surrounded by a sturdy cell wall | bacteria |
| a poison | toxin |
| one-celled organism that are larger than viruses but smaller than bacteria | rickettsias |
| the return of an infecton that your body has just fough off | relaps |
| the stage of illness when you develop mild symptoms | prodromal stage |
| the organisms that cause malaria and African sleeping sickness | protozoa |
| the redness and swelling that develop in response to the invasion of pathogen | inflammation |
| your body's ability to fight off a pathogen before it makes you sick | immunity |
| a disease that is caused by a pathogen | infectious disease |
| a multicelled organism that usually infects the intestines of its host | parasitic worm |
| the stage in which an infection reaches its peak | illness stage |
| an organism or other agent that invades your body and makes you sick | pathogen |
| organisms that cause athlete's foot and ringworm | fungi |
| an injection of disabled or dead pathogens that causes your body to develop immuntiy to the pathogen | vaccination |
| the period of teim in whihc your body's defenses overcome a disease | recovery stage |
| the most widely used type of antibacterial medicine | antibiotic |
| an unwanted reaction to a medication | side effect |
| a medicine that can be purchased without a doctor's prescription | over-the-counter medicine |
| a revaccination | booster |
| the period of time after a pathogen enters your body and before you begin to feel sick | incubaton stage |
| the smallest kind of pathogen | virus |
