Give a brief introduction to the characteristics of the disease: measles is one of the most common acute viral infections in children, which is highly contagious, the disease clinical fever, inflammation of the upper respiratory tract, conjunctivitis, etc., while the skin is characterized by the appearance of red maculopapular rash and mucous membrane spots on the cheek mucosa with measles and rash receding after the remains of pigmentation with bran-like desquamation. Acute patients are the only source of infection and are infectious from the last 1-2 days of the incubation period to 5 days after rash onset. The secretions of the patient’s mouth, nose, throat and eyes all contain the virus and are discharged with droplets, so respiratory droplets are the main route of transmission. The disease can occur in all seasons, most often in winter and spring, with the highest incidence in children aged 6 months to 5 years. After the disease, there is a lasting immunity, and the re-occurrence of the disease is very rare. The disease is highly contagious, with more than 90% of susceptible individuals developing the disease after contact. It is prevalent in densely populated areas without universal vaccination about once every 2-3 years, with the highest incidence in children aged 1-5 years. The most common complications are bronchopneumonia, myocarditis, laryngitis, and otitis, while others can occur as encephalitis, subacute sclerosing encephalitis, cardiovascular insufficiency, and disseminated tuberculosis lesions. Patients found with measles should be isolated immediately until 5 days after rash emergence, or up to 10 days if there are complications. Any susceptible children in contact with the patient should be quarantined for 3 weeks. The patient’s clothes should be exposed to the sun; the patient’s room should be ventilated and irradiated with ultraviolet light, and the epidemic season should be well publicized. There is no need to panic if you are infected with measles, just isolate the patient at home, keep the room ventilated, expose the clothes to the sun, eat a reasonable diet, and generally recover in 7-10 days; if the child has a high fever, poor spirit, shortness of breath with coughing and wheezing and other serious symptoms, go to the hospital in time to avoid delays.