 Adults with weakened immune systems may have a lower response to the vaccine. Side effects include pain and swelling at the injection site, fatigue, headache, muscle, and joint pain. For full prescribing information, please call 1-855-213-2138 or visit prevnar20.com. Hey, hey, take it away. Let's have fun and fight. Hey, everyone. My name is Joseph Kincaid. Have you heard about the amazing school I go to? It's like a magical learning adventure every day. We have awesome teachers who make learning super fun.