A pathogen causes infectious disease. For instance, influenza virus is the pathogen that causes flu.
Circulatory homeostasis
Hepatitis is caused by blood borne pathogens. The pathogens themselves conveniently share similar names to the type of hepatitis they cause: The pathogen that causes Hepatitus A is known as the Hepatitis A Virus (HAV), the pathogen that causes Hepatitus B is known as the Hepatitis B Virus (HBV) and the pathogen that causes Hepatitus C is known as the Hepatitis C Virus (HCV).
The pathogen Streptococcus causes Strep throats.
The scientific name of the pathogen that causes the flu is Influenza virus. There are different types of influenza viruses, with the main ones being type A, B, and C.
Ebola virus is a pathogen that causes diseases of the circulatory system. This can cause failure of most organs and serious bleeding or hemorrhaging.
Rickettsia rickettsii, which is a type of bacteria carried by ticks.
The type of pathogen that causes amoebic dysentery is known as shingellosis. This is also referred to as bacillary dysentery.
It's a virus called coxsackie virus. No joke.
Colds, influenza and measles are all three caused by different kinds of viruses.
The type of pathogen that causes cholera is bacteria... one called Vibrio Cholerae (V. Cholerae). It's a gram-negative thingamajig - no idea what that is, sadly.
I Do Not Know