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What is The characteristic features of El tor cholera are all except and explain in detail?
Ans. is 'c' i.e., Secondary attack rate is high in family El Tor vibrio . It is much hardier than classical vibrios, capable of surviving in the environment much longer. . The severity of illness is much less, with a large propoion of mild and asymptomatic infections. . Moality is low and the carrier rate is high. . Fewer secondary cases in affected families (secondry attack rate is less) - Park