Not a strategy for measles elimination ?

Ans. is 'a' i.e., Mop up: Vaccinate kids left with routine vaccination The prioies of countries persuing measles control include :- Improve routine vaccination coverage level to at least 90%. Active coverage of more than 90% in catch-up and follow-up campaigns or active coverage of more than 90% with routine second dose of measles vaccine. Establish case - based surveillance with laboratory confirmation of suspected cases and virus isolation from all chains of transmission. Conduct supplementary vaccination campaign together with administration of vitamin 'A' in high risk areas. In India, measles is a major cause of morbidity and a significant contributor to childhood moality. Prior to the immunization programme, cyclical increase in the incidence of measles were recorded every third year. With the increase in immunization coverage levels, the intervals between cyclic peaks has increased and the intensity of the peak minimized. Epidemic of measles occur if propoion of susceptible children is > 40% If measles is introduced in a virgin community, it infects > 90% of children. Eradication of measles requires vaccine coverage >96%