New York City has confirmed its first case of mpox caused by clade I — the more dangerous variant of the virus — raising concern among public health officials as the more infectious and more severe form of mpox continues to arrive in major U.S. cities. The NYC Health Department issued a formal advisory noting that there is no known local community transmission tied to this case, but health commissioner Dr. Alister Martin confirmed the virus is now present in the city and urged residents to be aware of symptoms and vaccination options.
As of May 9, 2026, the NYC Department of Health reported 79 mpox cases in New York City in 2026 alone, including at least a small number of clade I cases. Nationally, the CDC confirmed more than 20 clade I mpox cases in the United States as of June 2026, all linked to recent international travel or contact with travelers from affected regions in Central and Eastern Africa or Western Europe.
