EITor vibrio may be differentiated from classical vibrio by fact that EITor vibrio -: (A) Agglutinate chicken and sheep erythrocytess, (B) Resistant to classical phage IV, (C) Resistant to polymyxin B-5 unit disc, (D) All of the above
Answer is D. Ans. is 'd' i.e., All of the above El Tor vibrio o It is much hardier than classical vibrios, capable of surviving in the environment much longer. o The severity of illness is much less, with a large propoion of mild and asymptomatic infections. o Moality is low and the carrier rate is high. o Fewer secondary cases in affected families (secondry attack rate is less) - Park