An immigration officer wears a face mask at the Nnamdi Azikiwe International Airport in Abuja August 11, 2014. Nigeria's commercial capital Lagos has 10 confirmed cases of Ebola, up from seven at the last count, and two patients have died, including the Liberian who brought the virus in, the health minister said on Monday. REUTERS/Afolabi Sotunde (NIGERIA - Tags: HEALTH DISASTER)