What Are The 6 Different Types Of Pathogens?
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. How many pathogens are there? In total, there are ∼1,400 known species of human pathogens (including viruses, bacteria, fungi, protozoa and helminths), and although this may seem like