It has been speculated that megabats may be the natural reservoir of the Ebola virus,[28] though the evidence has been called "far from decisive".[29] Due to the possible association between Ebola infection and "hunting, butchering and processing meat from infected animals", several West African countries banned bushmeat (including megabats) or issued warnings about it during the 2013–2016 epidemic; many bans have since been lifted.[30] The wildlife trade of bat meat has been hypothesized as a possible origin of 2019-nCov, which was first detected in December 2019.[31]