Q.102. Match the household insect vectors in Column I with their associated diseases in Column II.
Column I
P. Kissing bug (Hemiptera)
Q. Sand fly (Diptera)
R. Deer fly (Diptera)
S. Oriental rat flea (Siphoneptera)
Column II
(i) Bubonic plague
(ii) Tularemia
(iii) Chagas disease
(iv) Kala azar
(A) P-(iv), Q-(iii), R-(ii), S-(i)
(B) P-(iii), Q-(ii), R-(i), S-(iv)
(C) P-(i), Q-(iv), R-(iii), S-(ii)
(D) P-(iii), Q-(iv), R-(ii), S-(i)

Kissing bugs transmit Chagas disease, while sand flies spread Kala azar. Deer flies carry tularemia, and Oriental rat fleas are linked to bubonic plague.​

The correct option is (D) P-(iii), Q-(iv), R-(ii), S-(i). This matches kissing bug to Chagas disease, sand fly to Kala azar, deer fly to tularemia, and Oriental rat flea to bubonic plague.​

Vector-Disease Matches

• P. Kissing bug (Hemiptera): Transmits Chagas disease (iii), caused by Trypanosoma cruzi parasite through feces near bite sites. Common in Latin America but relevant to household vectors.​

• Q. Sand fly (Diptera): Vectors Kala azar (iv), or visceral leishmaniasis from Leishmania donovani. Bites during dusk transmit the protozoan parasite.​

• R. Deer fly (Diptera): Carries Tularemia (ii), or rabbit fever, via Francisella tularensis bacteria. Mechanical transmission occurs when flies regurgitate infected blood.​

• S. Oriental rat flea (Siphonaptera): Primary vector for Bubonic plague (i), spread by Yersinia pestis bacterium from rodents to humans via bites.​

Option Explanations