PATHOLOGY

Detailed explanation-1: -What is a pathogen? A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.

Detailed explanation-2: -Disease causing microorganisms are called pathogens. These include viruses, bacteria, fungi, protozoans and worms.

Detailed explanation-3: -Pathogens are any disease-causing agent including bacteria, viruses, fungi, helminths, protozoans, and prions. They cause illness in the human body unless the immune system is strong enough to fight off the pathogen.