Immunizations : deposit liquid under the skin inside the muscle and can take some time to absorb. Don't do anything to the site or you may irritate it and make it worse. It will resolve on its own over the next few days. If it gets red or you get a fever, call your doctor for advice.
Answered 12/23/2015
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Muscle spasm: The vaccines are injected into muscle to get the most consistent dispersal over time, and sometimes the muscle will tighten up in the areas involved. It will relax within 48 to 72 hours in most cases.You can sometimes speed the process with a heating pad on a low setting.
Answered 11/16/2015
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