First US Case of New Form of Mpox Surfaces in California

Patient is receiving treatment after returning from eastern Africa
By Newser Editors and Wire Services
Posted Nov 16, 2024 1:40 PM CST
First Case of New Form of Mpox Confirmed in US
This colorized electron microscope image provided by the National Institute of Allergy and Infectious Diseases in 2024 shows Mpox virus particles, orange, found within infected cells, green.   (NIAID via AP, File)

Health officials said Saturday they have confirmed the first US case of a new form of mpox that was first seen in eastern Congo. The person had traveled to eastern Africa and was treated in Northern California upon return, according to the state Department of Public Health. Symptoms are improving, the AP reports, and the risk to the public is low. Mpox is a rare disease caused by infection with a virus that's in the same family as the one that causes smallpox. It is endemic in parts of Africa, where people have been infected through bites from rodents or small animals.

Earlier this year, scientists reported the emergence of a new form of mpox in Africa that was spread through close contact including through sex. More than 3,100 confirmed cases have been reported just since late September, according to the World Health Organization. The vast majority of them have been in three African countries—Burundi, Uganda, and the Democratic Republic of the Congo. Since then, cases of travelers with the new mpox form have been reported in Germany, India, Kenya, Sweden, Thailand, Zimbabwe, and the UK.

Health officials earlier this month said the situation in Congo appears to be stabilizing. The Africa Centers for Disease Control and Prevention has estimated that Congo needs at least 3 million mpox vaccines to stop the spread and that the rest of Africa needs another 7 million. The current outbreak is different from the 2022 global outbreak of mpox where gay and bisexual men made up the vast majority of cases.

(More mpox stories.)

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