Font Size:


Monkeypox is a very rare disease caused by infection with the monkeypox virus. It is usually found in Central and West Africa and does not occur naturally in the United States. However, cases have recently been identified in the U.S. with more cases expected. This situation is being closely monitored by public health.

What's New?


Healthcare providers should visit our For Healthcare Providers page for our Monkeypox Virus Planning Response training video and other training and preparation resources.

Vaccination providers should visit our For Vaccination Providers page for resources and downloads.

For current information on the most recent cases of monkeypox in the U.S., visit the Centers for Disease Control and Prevention (CDC).

To view the number of cases by state, visit the CDC's 2022 U.S. Map & Case Count.

CDC Quicklinks

For more resources on Monkeypox, visit Resources and the CDC.

Brief History of Monkeypox

"Monkeypox" was so named because it was first discovered in 1958 in monkeys. It is most often found in small mammals such as rodents, including rats, mice, squirrels, rabbits, and prairie dogs. The first outbreak of monkeypox in the U.S. was reported in 2003 among people who became sick after coming in contact with infected pet prairie dogs. Historically, most cases of monkeypox usually occurred after a person came into contact with an infected wild animal or animal product.

Page last updated: September 19, 2022