The World Health Organization (WHO) says the death toll from the Ebola outbreak in West Africa is up to at least 121.
WHO says health ministries in Guinea, Liberia and other affected countries have reported about 200 confirmed or suspected cases of the virus.
The vast majority of victims are in Guinea, where officials have reported 168 cases, including 108 deaths. Liberia reports 13 deaths from the disease.
News reports Tuesday said Gambian authorities have ordered airlines not to pick up passengers from affected countries.
Last week, WHO Assistant Director-General Keiji Fukuda said the West Africa outbreak was one of the most challenging outbreaks of Ebola health officials that have ever faced. He predicted it could take up to four months to contain the outbreak.
The outbreak began in a forested southeastern region of Guinea in February. Since then, health officials have reported confirmed or suspected cases in Liberia, Mali and Sierra Leone.
The Ebola virus is spread by contact with bodily fluids. It can cause symptoms that include vomiting, unstoppable bleeding and organ failure.
Health officials are trying to stop the disease from spreading by isolating the sick and tracking down people they came in contact with.
This is the first major outbreak of Ebola in West Africa.