Mpox (Monkeypox)
Information & Guidance
About Mpox
Mpox is a rare disease caused by infection with the mpox virus. Mpox virus is part of the same family of viruses as variola virus, the virus that causes smallpox. Mpox symptoms are similar to smallpox symptoms, but milder, and mpox is rarely fatal. Mpox is not related to chickenpox.
Mpox Case Data
To view the number of reported probable and confirmed mpox (monkeypox) cases in San Mateo County, see data from the California Department of Public Health (CDPH).