<prompt> True about El T or vibrio -More SARVP reaction veLow carrier rateMore severe  <response>: Ans. is b i.e., VP reaction ve o El Tor Vibrio has following characteristics in comparison to classical vibrioi It is much hardier than classical vibrios, capable of surviving in the environment much longer.ii The severity of illness is much less, with a large proportion of mild and asymptomatic infections.iii Mortality is low and the carrier rate is high.iv Fewer secondary cases in affected families secondry attack rate is less.TestClassical choleraEl TorHemolysis-Voges-Proskauer-Chick erythrocyte-Aggulination Polymyxin B-Sensitivity Group IV phage-Susceptibility-E1 Tor phage 5 susceptibility 