Monkeypox is a viral zoonosis caused by the monkeypox virus that can be transmitted between animals and humans, and can also be retransmitted between humans. Based on the current epidemiological investigation, the incubation period is 6 to 13 days, mostly 5 to 21 days. The main symptoms are fever, severe headache, swollen lymph nodes, back pain, muscle aches and weakness. The rash usually begins 1-3 days after a fever and is concentrated on the face and limbs.Lesions can occur at anywhere from a few to thousands of sites, and in severe cases they can combine to cause large chunks of skin to fall off. These rashes are often very painful. When a rash appears, the patient is contagious.