Smaller than a bacteria, enter healthy cells, forcing them to replicate
Viruses
An organism that causes a disease is called
A pathogen
Can have one cell or more, usually occur in places that are warm and damp. Example athlete’s foot.
Fungus
HIV is transmitted through an exchange of bodily fluids, such as during sexual intercourse or sharing of infected needles, this is a type of .......................... contact
Direct
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