64. Influenza vaccine is recommended for:
1. Elderly
2. Persons with underlying chronic diseases
3. HIV infected
4. General population
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 4
(c) 2 and 3 only
(d) 1, 2 and 3
ANS-(d) 1, 2 and 3