Herpes is contagious. Herpes is a disease caused by the human herpes virus, mainly including herpes simplex, chickenpox and herpes zoster, although all are contagious, but each disease is infectious in slightly different ways: 1. Herpes simplex: divided into herpes simplex type I and type II, type I can cause infection of the mouth, lips, skin and genitals, mainly through direct contact and respiratory transmission, and patients and asymptomatic carriers share a room or a There is a risk of infection if you share a room or a cup with a patient or an asymptomatic carrier, or if you touch objects touched by a patient or an asymptomatic carrier. Herpes simplex type II mainly causes genital herpes and is transmitted through sexual and indirect contact, and there is a risk of infection if you have sex with the patient or share bath tubs and towels. The virus can enter the body through the respiratory tract when first infected, and then the virus is latent in the posterior root ganglion of the spinal cord, and once the body’s resistance decreases, the virus can activate and replicate again causing herpes zoster. In patients with shingles, the virus is only present in the herpes fluid and cannot be transmitted to others through the respiratory tract or blood. Children who have never been exposed to the varicella-zoster virus may contract chickenpox without manifesting shingles when they first come into contact with the herpes zoster patient’s herpes fluid.