Ans. is 'd' i.e., If a patient develops paralysis 30 days after the diagnosis of AFP o The patient checked for residual paralysis 60 days after the diagnosis of AFP. Strategies for polio eradication in India a) Conduct pulse polio immunization days every year for 3-4 years or until poliomyelitis is eradicated. b) Sustain high levels of routine immunization coverage. c) Monitor OPV coverage at district level and below. d) Improve surveillance capable of detecting all cases of AFP due to polio and non-polio aetiology. e) Ensure rapid case investigation, including the collection of stool samples for virus isolation. f) Arrange follow-up of all cases of AFP at 60 days to check for residual paralysis. g) Conduct outbreak control for cases confirmed or suspected to be poliomyelitis to stop transmission.