Snakebite is shingles, which is not contagious after it has healed. Herpes zoster is an infectious disease caused by varicella zoster virus, the main symptoms are pimples and blisters and other lesions, accompanied by pain, fever and malaise and other systemic symptoms, in the infectious period of the disease virus is highly contagious, but when the systemic symptoms, lesions, local pain and other symptoms disappeared, that is, the clinical recovery, is no longer contagious. However, it should be noted that some patients with herpes zoster may have recurring episodes, when the body’s resistance declines, the virus may be reactivated, after the incubation period will migrate to the surface of the skin to reappear herpes zoster, so the patient in the cured still need to observe the skin state, when there are uncomfortable symptoms should be promptly to the hospital for examination, take early intervention measures.