Vector control for yellow fever around an airpo is done upto a distance of-: (A) 400m, (B) 200m, (C) 500m, (D) 100m
Answer is A. Ans. is 'a' i.e., 400 m o Airpos and seapos are kept free from the breading of insect vectors over an area extending at least 400 meters around their peripeters.