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.
What is a pathogenic organism?
The definition of a pathogenic organism is an organism capable of causing disease in its host. A human pathogen is capable of causing illness in humans. Common examples of pathogenic organisms include specific strains of bacteria like Salmonella, Listeria and E. coli, and viruses such as Cryptosporidium.
What types of bacteria are pathogenic?
Pathogenic bacteria contribute to other globally important diseases, such as pneumonia, which can be caused by bacteria such as Streptococcus and Pseudomonas, and foodborne illnesses, which can be caused by bacteria such as Shigella, Campylobacter, and Salmonella.
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 6 types of pathogens?
Big 6 Pathogens. The FDA lists over 40 types of bacteria, viruses, parasites, and fungi that contaminate foods and cause illness, but they have singled out 6 that are the most contagious and cause the most severe symptoms. They are E coli, Hepatitis A, Nontyphoidal Salmonella, Norovirus, Shigella, Salmonella Typhi.