A suspected outbreak of Lassa viral hemorrhagic fever was announced in Nigeria on 8 January. The Lassa virus is carried by the multimammate rat. It is transmitted to humans through physical contact with objects; eating contaminated food; or infected bodily fluid. On 14 January, official records states at least 140 suspected cases and 30 confirmed cases, including 53 deaths, in 14 states indicating a case fatality rate (CFR) of 37.9%. As of 20 January, local media has reported as many as 212 suspected cases and 63 deaths in 17 states.