The Moderna and Pfizer COVID-19 vaccines do not have the virus that causes COVID-19 in them. Sometimes people get a fever or feel tired for a day or so after getting a vaccine. These symptoms are normal and are a sign that the body is building immunity. You can learn more on the Understanding How COVID-19 Vaccines WorkCDC website.
http://publichealth.lacounty.gov/media/Coronavirus/vaccine/index.htm

