You just got your pneumococcal vaccine, and it felt more painful than you thought it would. A few weeks or months later, your shoulder pain hasn’t gone away. Your arm is still killing you after the pneumonia shot. It’s even getting worse. This isn’t something you have experienced before. Nothing like this has happened to…

At a recent appointment with your primary care doctor, they asked if you’ve received your annual flu shot yet. You say no. When they ask if you’d like one at the end of your visit, you say yes. You get it every year to protect yourself from new seasonal flu strains. But this time, you…