Measles vaccine given to contact of measles case exces protective effect within-
Correct Answer: 7 days
Description: - susceptible host of measles May be protected against measles with measles vaccine, provided that this is given within 3 days of exposure. - this is because , the incubation period of measles induced by vaccine is about 7 days , compared with 10 days for naturally acquired measles. Thus protective effect is obtained within 7 days. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:149
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Social & Preventive Medicine
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