New York health department confirms first case of new mpox strain
February 11, 2025
New York has confirmed its first case of the newly emerging mpox strain, clade Ib, adding to growing global concerns over its spread. This case marks the fourth confirmed U.S. infection, following reports in California, Georgia, and New Hampshire. The U.S. Centers for Disease Control and Prevention (CDC) has stated that these cases are unrelated. The World Health Organization (WHO) declared mpox a global public health emergency in August 2024 after outbreaks surged in the Democratic Republic of Congo and neighboring countries. While New York health officials have not disclosed further details, the case underscores the need for continued vigilance and preventive measures.
New York state has confirmed its first case of the newly emerging clade Ib mpox strain, raising further concerns about its spread beyond Africa. This marks the fourth confirmed case in the United States, following cases in California, Georgia, and New Hampshire. The U.S. Centers for Disease Control and Prevention (CDC) has emphasized that these cases are not linked, suggesting independent introductions into the country.
The World Health Organization (WHO) declared mpox a global public health emergency for the second time in two years in August 2024, citing its increasing spread in the Democratic Republic of Congo (DRC) and neighboring countries. Unlike previous outbreaks, the clade Ib strain has demonstrated sustained human-to-human transmission, prompting heightened surveillance efforts worldwide.
While the New York State Department of Health has not provided further details about the case, health authorities stress the importance of continued vigilance. Mpox primarily spreads through direct contact with an infected person’s skin lesions, bodily fluids, or contaminated materials. Symptoms include fever, swollen lymph nodes, and a painful rash that progresses over several weeks.
Given the growing global footprint of this variant, public health agencies are urging at-risk populations, including travelers returning from affected regions, to monitor for symptoms and seek medical attention if necessary. Preventive measures such as vaccination with JYNNEOS remain critical, especially for those at higher risk of exposure.
As new cases of clade Ib emerge in the U.S. and beyond, continued research, surveillance, and public health coordination will be essential in containing further spread and mitigating potential risks.