Lassa fever will keep ravaging Nigeria unless better surveillance is put in place: Lassa fever in several Nigerian states is being spread by rats. World Health OrganisationLassa fever was first discovered nearly 50 years ago in Nigeria. Since then, it has been reported in other West African countries including Sierra Leone, Liberia and Guinea. There is also evidence of Lassa … [Read more...] about Lassa fever will keep ravaging Nigeria unless better surveillance is put in place | The Conversation