2022–2023 mpox outbreak in the United States
The 2022–2023 mpox outbreak in the United States is part of the larger outbreak of human mpox caused by the West African clade of the monkeypox virus. The United States was the fourth country outside of the African countries with endemic mpox, to experience an outbreak in 2022. The first case was documented in Boston, Massachusetts, on May 17, 2022. As of August 22, mpox has spread to all 50 states in the United States, as well as Washington, D.C., and Puerto Rico. The United States has the highest number of mpox cases in the world. California has the highest number of mpox cases in the United States.
| 2022–2023 mpox outbreak in the United States | |
|---|---|
Spread of mpox by US state as of September 24, 2022 | |
| Disease | Mpox |
| Virus strain | Monkeypox virus (West African clade) |
| Location | United States |
| Index case | Boston, Massachusetts |
| Arrival date | May 17, 2022 (1 year, 10 months, 4 weeks and 1 day ago) |
| Date | As of 13 April 2023 |
| Confirmed cases | 30,344 |
Deaths | 42 |
| Government website | |
| www | |
On August 4, 2022, the U.S. Centers for Disease Control and Prevention declared mpox a public health emergency in the United States. Wyoming was the last state in the United States to report at least one mpox case. On August 30, 2022, the first mpox death in the United States was reported.