An organism that causes a disease is called

He finds that cleaning his surgical tools reduces patients' infections

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

According to ............. , diseases are caused by microorganisms

He hypothesizes the germ theory, that diseases are caused by small animals

Smaller than a bacteria, enter healthy cells, forcing them to replicate

A ............, carries a pathogen and transmits it to healthy cells.

Can have one cell or more, usually occur in places that are warm and damp. Example athlete’s foot.

Four conditions must be met before one can say that a certain pathogen causes a disease. These conditions are called .........................

Decided to try making healthy animals sick by injecting them with pathogens from a sick animal