How long does it take to get over a reaction from pneumonia shot?

Most people experience mild side effects from the pneumonia vaccine, such as pain at the injection site, fever, chills, and muscle aches. These side effects usually go away within a few days. In some cases, more severe side effects can occur, such as difficulty breathing, chest pain, or seizures. These side effects are rare and usually go away within a few weeks. If you experience any severe side effects from the pneumonia vaccine, you should see a doctor immediately.