Cholera has killed 473 people in Zimbabwe in the latest outbreak of the disease, the World Health Organisation (WHO) office in Harare said in a report, a copy of which was received Tuesday. "A large cholera outbreak is affecting most regions of the country, with more than 11,700 cases and 473 deaths recorded between August and November 30," Custodia Mandlhate, of the WHO's Zimbabwe office, wrote in the report. "This represents a case fatality rate (CFR) of 4.0 percent nationally, but reached 50 percent in some areas during the early stages of the outbreak. The CFR benchmark should be below one percent," the statement said. It warned that the fatality rate "may rapidly escalate in populations without rapid access to simple treatments."