Where does Influenza Type A virus originate from? Why do you think northern and western states are affected predominantly?
Read the passage given below. Hint : Bird flu has.................human infections. 1. Where does Influenza Type A virus originate from? (a) Crows (b) Water birds in the wild (c) Poultry and turkey (d) Pigs Answer. (b) Water birds in the wild 2. Why do you think northern and western states are affected predominantly? (a) These states have large bird populations. (b) These states are blessed with wild habitats. (c) These states are either attractive destinations or lie in the winter migration routes. (d) They have large forests besides habitable areas. Answer. (c) These states are either attractive destinations or lie in the winter migration routes. 3. Influenza Type A virus infection in ducks, geese and crows is an instance of .......... transmission. Answer. Bird to bird 4. A virus modifying its exterior for more effective transmission and non-detection is called (a) asymptomatic infection (b) mutation (c) pneumonia (d) aerosol Answer. (b) mutation 5. Which one of the following is no