Q. Which all of the following are vector hosts?
✅ Correct Answer: (A)
Sand fly, Tse tse fly, House fly, Culex
Explanation:
A vector host is an organism (usually an insect or arthropod) that transmits pathogens from one host to another.
(A) Correct:
- Sand fly – Transmits Leishmania (causes Leishmaniasis)
- Tse tse fly – Transmits Trypanosoma (causes Sleeping Sickness)
- House fly – Transmits various bacteria causing diseases like dysentery and typhoid
- Culex – A mosquito that transmits filariasis and Japanese encephalitis
Why other options are incorrect:
- (B) contains pathogens (Trypanosoma, Leishmania), not vector hosts.
- (C) contains parasites (Plasmodium, Monocystis) and not all vectors.
- (D) includes Entamoeba (a protozoan) and silverfish (not a disease vector).
Explanation by: Mr. Dubey
A vector host is an organism (usually an insect or arthropod) that transmits pathogens from one host to another.
(A) Correct:
- Sand fly – Transmits Leishmania (causes Leishmaniasis)
- Tse tse fly – Transmits Trypanosoma (causes Sleeping Sickness)
- House fly – Transmits various bacteria causing diseases like dysentery and typhoid
- Culex – A mosquito that transmits filariasis and Japanese encephalitis
Why other options are incorrect:
- (B) contains pathogens (Trypanosoma, Leishmania), not vector hosts.
- (C) contains parasites (Plasmodium, Monocystis) and not all vectors.
- (D) includes Entamoeba (a protozoan) and silverfish (not a disease vector).