A<unk>  is a disease that can be spread through contamination by<unk>  and other body fluids.<unk>  can contain pathogens of various types, chief among which are microorganisms, like bacteria and parasites, and non-living infectious agents such as viruses. Three<unk> borne pathogens in particular, all viruses, are cited as of primary concern to health workers by the CDC-NIOSH: HIV, hepatitis B (HVB), & hepatitis C (HVC). Diseases that are not usually transmitted directly by<unk>  contact, but rather by insect or other vector, are more usefully classified as vector-borne disease, even though the causative agent can be found in<unk> . Vector-borne diseases include West Nile virus, zika fever and malaria. Many<unk> s can also be contracted by other means, including high-risk sexual behavior or intravenous drug use. These diseases have also been identified in sports medicine. Since it is difficult to determine what pathogens any given sample of<unk>  contains, and some<unk> s are lethal, standard medical practice regards all<unk>  (and any body fluid) as potentially infectious.<unk>  and Body Fluid precautions are a type of infection control practice that seeks to minimize this sort of disease transmission.
Blood-borne disease
Mosquito-borne disease
Laboratory-acquired infection
Opportunistic infection
Waterborne diseases
Foodborne illness
Hospital-acquired infection
Intentional contagion of infection