After a vaccine injection, you may experience arm soreness or stiffness in the shoulder. For most people, the soreness and swelling will only last a day or two and then go away.  Others, however, will suffer severe and debilitating shoulder pain from a vaccine that lasts weeks, months, or even years. It just doesn’t go…

  Vaccines can be life-saving for both children and adults. However, in rare cases, people may experience anaphylaxis or anaphylactic shock after vaccination, which is a potentially fatal allergic reaction to a vaccine or one of the ingredients used to create it. What You Need to Know About Anaphylaxis and Anaphylactic Shock After Vaccine Administration According…