What are the side effects of the hepatitis A vaccine?

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In rare cases, hepatitis A vaccine may cause a severe allergic reaction that leads to difficulty breathing, swelling in the face or throat, unusual hoarseness and hives. If you develop these symptoms after getting a hepatitis A vaccine injection, get medical attention right away and do not get your second, or "booster," shot. Other serious but rare side effects of hepatitis A vaccine may include irregular heartbeat, changes in behavior, unusual bruising or bleeding, high fever and seizures. Hepatitis A vaccine may cause less severe side effects, including mild fever, tiredness, headaches, loss of appetite, nausea and redness or swelling at the injection site. Other side effects may be possible, so talk to your doctor if any new or unusual symptoms develop after getting a hepatitis A vaccine injection.
 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.