IMMUNOLOGY

Detailed explanation-1: -Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions.

Detailed explanation-2: -Pathogens include viruses, bacteria, fungi, and parasites that invade the body and can cause health issues.

Detailed explanation-3: -Different types of pathogens. Share on Pinterest Bacteria, viruses, and fungi are all types of pathogens.

Detailed explanation-4: -Pseudomonas aeruginosa-can cause pneumonia and blood infections. Mycobacterium tuberculosis-causes tuberculosis. Listeria-causes foodborne infections and flu-like symptoms. Salmonella-causes typhoid. E. coli-causes intestinal infections with symptoms like fever and diarrhea.