(CNN)The Biden administration has declared the monkeypox outbreak in the US to be a public health emergency.”We’re prepared to take our response to the next level in addressing this virus, and we urge every American to take this virus seriously and to take responsibility to help us tackle this virus,” US Department of Health and Human Services Secretary Xavier Becerra said. Monkeypox is a poxvirus, related to smallpox and cowpox. It generally causes pimple- or blister-like lesions and flu-like symptoms such as fever, according to the US Centers for Disease Control and Prevention.