A variety of microorganisms can cause disease.
Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms.
Some common pathogens in each group are listed in the column on the right.
Infectious agents can grow in various body compartments, as shown schematically in Fig.
What are the 5 major types of infectious agents?
There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized. A brief review of the general characteristics of each of these agents and examples of some diseases they cause follows.
What are the 6 different types of pathogens?
Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions.
What are the 4 main pathogens?
Pathogen types. There are different types of pathogens, but we’re going to focus on the four most common types: viruses, bacteria, fungi, and parasites.
What are the 5 modes of transmission?
There are five main routes of disease transmission: aerosol, direct contact, fomite, oral and vector, Bickett-Weddle explained at the 2010 Western Veterinary Conference. Diseases can be spread to humans (zoonotic) by those same five routes.