Mpox is a rare disease caused by infection with the monkeypox virus.
Mpox transmission typically requires skin-to-skin contact, direct contact with body fluids, or prolonged face-to-face contact.
Symptoms are similar to smallpox, but less severe. They begin with flu-like symptoms like fever, headache, muscle aches, and swollen lymph nodes. A rash that can look like pimples or blisters may appear on the face, inside the mouth, and on other parts of the body.