CDC and state health department reports

Mpox Clade 1b Spreads in Uganda, Zambia, Zimbabwe; First U.S. Case in California Traveler

Nov 16, 2024, 05:36 PM

Mpox clade 1b has spread to more African countries, with health officials identifying new clusters in sex workers amid a steep rise in Uganda. New genetic sequencing results have confirmed the presence of the novel clade 1b mpox virus in recent cases from Zambia and Zimbabwe, indicating that the virus is now spreading in most of Africa's regions. In the United States, health officials have reported the first case of a new form of mpox in a traveler, specifically in California. This clade, which is causing an outbreak in central Africa, is believed to be more severe than clade 2, which caused the global outbreak that started in 2022. The patient recently traveled from Africa, and there is no evidence of local spread in California. Photo: NIAID/Flickr