The U.S. Center for Disease Control and Prevention reports that the cholera strain in Haiti is entering its second phase as expected now in the second year of the outbreak. The change means it’s possible for Haitians to fall ill a second time as the disease adapts to those with resistance to the original bug.
Haiti has the highest number of cholera cases in the world. More than 534,000 people, five percent of the population, have been sickened by the disease, and another 7,000 have died since the virus was introduced from Nepal in October, 2010. The vaccination being introduced is still effective against the mutated form of the disease, but less than 1 percent of the population is expected to receive it in the latest campaign.