MCQ IN MEDICINE

Detailed explanation-1: -Vectors of human and animal pathogens are haematophagous, i.e. they feed on blood. They include some mosquitoes, ticks, Culicoides, sandflies, fleas and horseflies. Vector-borne diseases can be strictly human (malaria, dengue, chikungunya, Zika, etc.) or strictly animal (African swine fever, bluetongue, etc.).

Detailed explanation-2: -Diseases can also be transmitted by a mechanical or biological vector, an animal (typically an arthropod) that carries the disease from one host to another. Mechanical transmission is facilitated by a mechanical vector, an animal that carries a pathogen from one host to another without being infected itself.