<prompt> El- tor and classic vibrio true isElTor is more commonElTor is more severeClassical is associated with more carriersAll of the above  <response>: El Tor Vibrio:The severity of illness- much less, with large propoion of mild and asymptomatic infectionsMoality was low and the carrier rate highEl Tor vibrio tended to remain endemic in many new geographic areas, causing periodic epidemicsProved to be much hardier than the classical vibrios, capable of surviving in the environment for much longer 