Monkeypox is a disease caused by the monkeypox virus, a pathogen closely related to variola virus, which causes smallpox.

Smallpox symptoms typically began 10 to 14 days after infection and included fever, exhaustion, headache and backache. A rash initially consisting of small, pink bumps progressed to pus-filled ...

Symptoms of monkeypox can also be compared with smallpox — a related virus that was declared eradicated in 1980. Like smallpox, monkeypox causes pus-filled boils. But monkeypox is generally ...