摘要：On July 23, 2014, the EVD outbreak was declared in Nigeria following the confirmation of EVD in a traveller, who arrived acutely ill at the international airport in Lagos, South Western Nigeria from Liberia .The outbreak subsequently filtered to a south southern Nigeria city, by a symptomatic contact who escaped surveillance in Lagos and flew to the city, generating 527 contacts, 4 cases and 2 deaths. The cases were household and hospital contacts. Active surveillance should be promptly enforced at domestic airports and inter-state borders as soon as an outbreak is declared to contain its spread locally
