This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Yearly vaccination on fixed dates is done for 
Select and explain. 
A. Polio, B. Malaria, C. Pertusis, D. Tetanus
A: Polio
Answer: A: Polio 
Explanation: Ans. a (Polio). (Ref. Park, PSM 17th/pg.91)Infectious diseases whose control is solely based on active immunization are: m Measles# Diphtheria# Polio# TetanusThe pulse polio programme involves yearly vaccination below 5 years of age on fixed dates.