Symptoms such as fever and rash may occur after MMR vaccination, which usually disappear on their own within 2-3 days; if the symptoms continue to worsen, it is considered to be a combination of viral or bacterial infections, which can be intervened by medication.
As MMR vaccine is an attenuated vaccine, there is a certain possibility of fever and rash after vaccination, which usually appear within one to two weeks after vaccination, and in most cases, fever occurs first, followed by pimples and other symptoms. Usually, the fever subsides within two to three days.
If the symptoms do not subside, or if the temperature exceeds 38.5°C, temperature control can be achieved by taking antipyretic and anti-inflammatory drugs such as ibuprofen. Persistent fever and high body temperature can not be ruled out due to viral or bacterial infections, in which case it is recommended to consult a doctor in time to clarify the diagnosis.
It should be noted that allergic fever may also occur after vaccination, therefore, it is recommended to go to the hospital promptly for diagnosis of the cause of fever after persistent fever or high fever; the above drugs should be used under the guidance of clinicians.