Vaccination and fever
What about fever and vaccines?
Although a mild infection or even an elevation in temperature is not a contraindication to vaccination, professional sources state that it is recommended a child should be free from fever for at least one week before a vaccination.
After the vaccination
In approximately half of all cases, children respond to vaccines with an elevated temperature or fever. This is a natural reaction indicating that the child is producing antibodies against the pathogens.
According to some scientific studies it seems to be more immunologically beneficial if we do not routinely administer antipyretic or analgesic drugs. Anti-fever and anti-pain agents reduce the production of immunological antibodies. Thus, the immune response that the vaccine wishes to achieve is reduced (138,139,140,141,151). Other studies contradict this somewhat (142,143).
The results also depend on the vaccine used, how old the children who have been vaccinated were, how many times they have been vaccinated and when antipyretic drugs are used, which ones.
In the case of specific high fever and injection site swelling, redness (local inflammation), antipyretic and analgesic agents may be considered (140,144). In such a case consult your physician.
Refer to the literature by numbers in this document here: ReferencesVersion update: 08th March 2020