Vaccine trial participants noted mild to moderate side effects — like soreness at the injection site, feeling lethargic, chills, fever, fatigue, muscle aches, and joint pain. While some of those side effects may seem extreme, it’s actually quite encouraging. It means that your body has a strong immune response to the vaccine. And no, you cannot get Coronavirus from the COVID-19 vaccine. It does not contain the virus. It is an mRNA vaccine.