MCQ IN MEDICINE

Detailed explanation-1: -host: A cell or organism which harbors another organism or biological entity, usually a parasite. pathogen: Any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa, or fungi.

Detailed explanation-2: -A vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. For example, Mosquitoes are called vectors, which means they are the carriers of Malaria.

Detailed explanation-3: -The Host-“Who” Hosts are organisms, usually humans or animals, which have been exposed to and harbor a disease. The host can be the organism that gets sick, as well as any animal carrier (including insects and worms) that may or may not get sick.