Question

A vector is an organism _______________ .

• A. That causes disease
• B. That does not cause disease by itself
• C. Spreads the disease from one host to another
• D. None of the above

Answer 1

Answer: (B), (C)

The correct options are
B That does not cause disease by itself
C Spreads the disease from one host to another

A vector in medicine is an organism that does not cause disease by itself but spreads the disease by conveying pathogens from one host to another. Species like mosquito, flea, lice for example, serve as vectors for the deadly diseases like malaria, plague, typhus respectively.