Monkeypox is a viral disease that occurs mainly in Central and West Africa. It is called monkeypox because it was first identified in laboratory monkeys, Signs and Symptoms · About Monkeypox · United States Outbreak of 2003 · Transmission. Monkeypox is an infectious disease caused by monkeypox virus that can occur in certain animals, including humans. Symptoms begin with fever, headache, muscle aches, swollen lymph nodes, and feeling tired.
This is followed by a rash that forms blisters and scabs. The time from exposure to onset of symptoms is usually 7 to 14 days. The duration of symptoms is usually two to four weeks. Cases can be severe, especially in children, pregnant women, or people with depressed immune systems.