The impact of the outbreak, which began in March, "has been enormous in terms of loss of human lives and negative socioeconomic effects," Sambo said.
ABUJA, Nigeria (AP) -- Nigerian officials say a Liberian man died of Ebola in a Lagos hospital Friday after arriving in the country on Tuesday. It is the first case of Ebola to be confirmed in Nigeria since the current outbreak began in West Africa earlier this year.
Nigerian Health Minister Onyebuchi Chukwu said all ports of entry in the country are now on "red alert" and health officials are investigating all people who had contact with the deceased.
Chukwu said that as soon as the man arrived in Nigeria on Tuesday, authorities isolated him after he displayed Ebola-like symptoms of fever, vomiting and diarrhea.
According to the World Health Organization, Ebola has killed at least 633 and infected 1,048 in Sierra Leone, Liberia, Guinea, and now Nigeria.