Question

Which condition is caused by pathogens?

Answer 1

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful, but under certain conditions, some organisms may cause disease.

Answer 2

Answer: Infectious diseases are caused by pathogens.

Explanation:

Pathogens, such as bacteria, fungi, protozoa, worms, viruses, and even infectious proteins (prions) cause infectious diseases. All types of pathogens must have ways to enter their host and avoid being immediately destroyed by the host immune system. Most bacteria do not cause disease. Those that have particular virulent genes that mediate interactions with the host and cause the host cells to react in particular ways encourage the pathogen's replication and spread infectious diseases.