Is it normal to develop a fever after a vaccine?

Vaccines save millions of lives every year and protect against the development of harmful diseases. Like all medicine, however, vaccines can sometimes have side effects. Fortunately, most of those side effects are considered normal and harmless.


A low-grade fever is one the most normal reactions that people experience after a vaccine. In fact, this sort of reaction is actually a sign that your body has begun to build immunity against the disease, and typically will resolve on its own within a few days.


Most of the time, the fever begins within 24 hours, lasting anywhere from one to three days. Most of the time, this is a reaction that is normal, harmless, and arguably helpful. So, do not panic if you, your child, or someone you know develops a mild, low-grade fever after being vaccinated – it’s normal, and shows that the vaccine is working.


Bear in mind that getting vaccinated is much safer than contracting the diseases vaccines prevent. However, vaccine injuries can, and do, occur. Contact us, if you or someone you know has suffered a vaccine injury. Our team is here to help.

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