Characteristics of the Epidemiological Situation on Cholera the World Over
Within the last decade increase in cholera morbidity rate in the world has been revealed (with due consideration to linear trend). For 2013 maintenance of the tendency is forecasted. Epidemics, outbreaks and importations of the infection have occurred in 109 countries around Asia, Africa, America, Europe, Australia and Oceania. Nosoarea has been expanding owing to inclusion of new administrative territories and countries into the epidemic process, some cases being registered for the first time during the seventh pandemic. Apart from the endemic territories in India and Bangladesh, formation of endemic foci in twelve African countries has been exposed, as well as continued dissemination of epidemic cholera, consecutive in time and spatially stepwise. These facts testify of the follow-up of the seventh pandemic. Moreover, V. cholerae O1 El Tor strains with classical ctx-B allele have been spreading worldwide, which coupled with factors mentioned above predetermines unfavorable cholera forecast on the global level.