The characteristic features of El tor cholera are all except
More of subclinical cases
Moality is less
Secondary attack rate is high in family
El tor vibrio is harder and able to survive longer
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