Pathogens are any organisms that can cause disease in humans; this includes a variety of viruses, bacteria, fungi and proteinaceous infectious material (such as prions). By definition, a human becomes infected with a pathogen through exposure and potentially develops disease related to that infection with a pathogen.
opportunistic infection
By the pathogen man.
A carrier
Pathogens are found everywhere, contaminated water, soil, food and air. Pathogen can and do cause diseases in animals and humans.
Because im fat
Human pathogen.
A pathogen is a microorganism that can cause disease in its host. This includes bacteria, viruses, fungi, and parasites that can infect humans, animals, and plants.
opportunistic infection
vaccine
a carrier
no humans are not related to memaids
No. Koalas are not related to humans.