Each infectious agent can be divided into Category A, B, or C. For more information about the different agents in each category, click the link here. For a longer list with descriptions of other types of diseases and their causes, click here. 

This type of bacteria is usually found in most environments and can be found in food which develops into listeriosis due to the environment that the material was in. This type of bacteria can cause both people and animals to get symptoms such as diarrhea, fever, vomiting, or even death due to the bacteria coming into their lungs.

This type of virus can cause virulence and usually comes into contact with the skin causing skin irritation and messing up the fluid system which can sometimes result in humidifier fever. The different types of pathogens that can be found are bacterial infections, fungal infections, parasitic infections, and viral infections. 

This type of illness can mess up an individual’s respiratory system and comes in 4 different forms: Seasonal, Pandemic, Avian, Swine

This type of disease is found when a wound comes into contact with hands that haven’t been washed or are contaminated.

People can come into contact with this disease through common things in the home such as air which is then inhaled by an individual and then transmitted into their lung system.

Also formed by bacteria, this one is ultimately caused by a spore-forming type of bacteria and can be contracted from animals that already have the disease.