The full name of the MMR vaccine is the combined live attenuated MMR vaccine, which is intended for mumps and other susceptible individuals over the age of 8 months and months. The MMR vaccine is intended for rubella, mumps, and measles susceptible individuals over the age of 8 months, and is available throughout the year. After having received this vaccine, the body will develop immunity against measles virus, rubella virus and mumps virus, which can prevent rubella, mumps and measles, so it is possible to receive the combined live attenuated MMR vaccine even beyond eight months of age. Adverse reactions of this product include local pain, transient febrile reaction, scattered rash, mild salivary gland enlargement, anaphylaxis, etc. It is contraindicated for patients who are allergic to any components of this product, pregnant women, patients with acute diseases, acute exacerbation of chronic diseases, severe chronic diseases, fever, immunodeficiency, immunocompromise, undergoing immunotherapy, encephalopathy, uncontrolled epilepsy, other progressive neurological diseases. Patients with other progressive neurological disorders are contraindicated. It is recommended that you talk to your doctor before immunizing your child.