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Outbreak Updates
20 October 2025
USA + California

Mpox in USA

As of 17 October 2025, three confirmed cases of clade I mpox have been reported from Southern California. These cases have no recent travel history or known contact with one another indicating there is some community transmission amongst the MSM population in California. Please see our Topics in Brief article for further details on mpox.

Source: State Mpox in brief
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Polio Pregnancy Yellow fever Malaria Vaccine / Vaccination Rabies Dengue Marburg Mpox Nipah virus Oropouche MERS-CoV Pertussis

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Polio Pregnancy Yellow fever Malaria Vaccine / Vaccination Rabies Dengue Marburg Mpox Nipah virus Oropouche MERS-CoV Pertussis