Correspondingly, what are the 6 types of pathogens which cause disease?
A variety of microorganisms can cause disease. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms.
Secondly, what is the largest pathogen?
We have listed the pathogens in size order: from the largest – the multicellular (which means many celled) parasites – in the top row, to the smallest – prions [pry-onz] – in the row second from bottom, above the column total.
What are the types of pathogens?
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.
Are viruses pathogens?
Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions. Pathogens of all classes must have mechanisms for entering their host and for evading immediate destruction by the host immune system. Most bacteria are not pathogenic.