An Ebola virus epidemic in Sierra Leone occurred in 2014, along with the neighbouring countries of Guinea and Liberia. On 18 March 2014, Guinean health officials announced the outbreak of a mysterious hemorrhagic fever "which strikes like lightning". It was identified as Ebola virus disease and spread to Sierra Leone by May 2014. The disease was thought to have originated when a child from a bat-hunting family contracted the disease in Guinea in December 2013.