What is rubella a disease? Rubella is an acute infectious respiratory disease caused by rubella virus infection. It is more prevalent in winter and spring, and can form epidemics in kindergartens and elementary schools, but it is not as contagious as measles, and most are immune for life after a single illness, with only occasional reinfection. The main clinical manifestations are: after 10-21 days of contact with a rubella patient, a normal child develops a fever with a body temperature of 38-39°C, cough, runny nose, sneezing, and poor appetite. 1-2 days later, a rash begins to appear, first on the cheeks, and then on the trunk and limbs. The rash is usually light red and slightly red. The rash is usually light red, slightly elevated, slightly neater than measles, 2 mm in size, slightly larger than scarlet fever rash, with normal skin between the rash, and more rashes on the face and extremities than on the trunk, and the rash begins to fade after 4-5 days, while systemic symptoms decrease. During physical examination, in addition to the specific rash, swollen lymph nodes behind the occiput and behind the neck are seen, and after the rash subsides, the lymph nodes shrink rapidly. On routine blood tests, the total white blood cell count is slightly lower at the time of rash, and the percentage of lymphocytes in the classification increases. The prognosis of the disease is good, pediatric complications are rare, individual patients can be complicated by tonsillitis, otitis media, bronchitis, and occasionally complications of encephalitis. The diagnosis of rubella: is generally based on the epidemiological history, clinical symptoms and signs. If available, PCR for rubella can be done to confirm the diagnosis. In addition, rubella has similarities with measles, early childhood emergency rash, and drug rash. Measles usually develops in 3-4 days with a fever, a slightly larger rash than rubella, and heavy systemic symptoms. Erysipelas is seen only in infants, with high temperature, fever for 3-4 days, and a rash that subsides with fever or after the fever has subsided. There is no special treatment for rubella: during the fever, bed rest should be paid attention to, warming and detoxifying herbs can be taken, and a liquid or semi-liquid diet should be given. Those with comorbidities may be treated as such. The key to avoiding rubella is prevention. The epidemic of rubella in pediatric patients has caused infections in pregnant women, resulting in an increase in teratogenicity of the babies born. Therefore, during rubella epidemics, minimize taking children to crowded places, such as shopping malls and theaters, and avoid contact with rubella patients. Because rubella patients are not contagious five days after the rash appears, rubella should be isolated until five days after the rash appears, or not if there is no condition for isolation, with the exception of pregnant women. Regardless of whether the pregnant woman has previously suffered from rubella or had been vaccinated against rubella, avoid contact with rubella patients, because pregnant women infected, 70% of the fetus can be infected, early pregnancy infection can lead to fetal malformations, mid- and late pregnancy infection, although the fetus is not malformed, but can become carriers of the virus. At present, I have vaccinated women of childbearing age under 40 years and children aged 15 months to 12 years in some areas against rubella. vaccination before 15 months of age can affect the effectiveness of vaccination because of the presence of antibodies brought from the mother. Pregnant women should avoid vaccination, and women of childbearing age should avoid pregnancy for three months after vaccination, otherwise this live attenuated rubella vaccine may cause low fever, mild rash, and joint pain in older children and adults, which usually subsides on its own after a week and does not need to be treated. Severe symptoms require hospital consultation.