ANATOMY

Detailed explanation-1: -cholerae infection results in long-lasting immunity [12, 13]. An evaluation of hospitalizations in Matlab between 1968 and 1977 identified only 3 repeat hospitalizations from cholera, all in young children; suggesting that infection resulted in an approximately 90% protection against subsequent disease [13].

Detailed explanation-2: -Active Immunity results when exposure to a disease organism triggers the immune system to produce antibodies to that disease. Active immunity can be acquired through natural immunity or vaccine-induced immunity.

Detailed explanation-3: -Two types of immunity exist-active and passive: Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.

Detailed explanation-4: -Oral cholera vaccines work by giving people a small dose of the cholera bacteria to swallow. This dose of bacteria has been killed or changed so that it does not cause diarrhoea but is still able to make the person immune to natural cholera. There are three oral cholera vaccines currently available.