LONDON (AP) — The World Health Organization declared Wednesday that the increasing spread of mpox in Africa is a global health emergency , warning the virus might ultimately spill across international borders. The announcement by WHO director-general Tedros Adhanom Ghebreyesus came after a meeting of the U.N.

health agency's emergency committee. The Africa Centers for Disease Control and Prevention declared mpox a public health emergency on the continent on Tuesday. WHO said there have been more than 14,000 cases and 524 deaths in Africa this year, which already exceed last year's figures.

So far, more than 96% of all cases and deaths are in a single country — Congo. Scientists are concerned by the spread of a new version of the disease there that might be more easily transmitted among people. Here’s a look at what we know about mpox, and what might be done to contain it: Mpox, also known as monkeypox, was first identified by scientists in 1958 when there were outbreaks of a “pox-like” disease in monkeys.

Until recently, most human cases were seen in people in central and West Africa who had close contact with infected animals. In 2022, the virus was confirmed to spread via sex for the first time and triggered outbreaks in more than 70 countries across the world that had not previously reported mpox. Mpox belongs to the same family of viruses as smallpox but causes milder symptoms like fever, chills and body aches.

People with more serious cases can develop lesions .