What are the types of infectious diseases?
COVID-19 is a viral disease, just one of the four main types of infectious diseases. The others include bacterial, fungal, and parasitic—each different in how they spread and how they affect the body. Infectious diseases are illnesses brought on by pathogens—dangerous organisms—that enter your body from the outside. Infectious disease-causing pathogens include viruses, bacteria, fungus, parasites, and, in rare cases, prions. Infectious diseases can be contracted from other people, insect bites, contaminated food, drink, or soil. Worldwide, infectious diseases are very frequent, but some are more prevalent than others. For instance, 1 out of every 5 Americans contracts the flu virus each year, yet less than 300 people are found to have prion illnesses . Here is a list of some of the most prevalent infectious diseases, organised by type. Common infectious diseases caused by viruses : AIDS Hepatitis. Ebola Human papillomavirus (HPV). COVID-1...