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Mpox (formerly known as monkeypox)

Providing the latest updates on the mpox outbreak, including cases, vaccines, and prevention strategies.


Mpox (formerly known as monkeypox) is a viral disease. Right now, there’s an outbreak of mpox in the United States and here in Philadelphia. The virus is mostly spreading through skin-to-skin contact. A pregnant person can also pass mpox to a fetus.

Mpox isn't a sexually transmitted infection. Anyone who's exposed to mpox can get it — but some groups of Philadelphians are more likely to be exposed. The current outbreak of mpox has been found more often in men and transgender people who have sex with men and/or who have had multiple partners.

If you believe you've been exposed, or are at risk of exposure, call (215) 685-5488 to ask about vaccines.

To learn more about vaccines, visit our Vaccines page or What you need to know about mpox from Philly, Keep on Loving.


Acute Communicable Disease Program
1101 Market Street
Philadelphia, PA 19107
Fax: (215) 238-6947