COVID-19 Vaccine Side Effects: Fatigue, Headache, and Chills are Common Immune Responses
The COVID-19 vaccine is recommended for individuals aged 6 months and older, with specific age requirements for different vaccine brands. The American Academy of Pediatrics (AAP) provides a detailed schedule for child and adolescent immunizations, including COVID-19 vaccines. The most updated version of the COVID-19 vaccine should be used. Common side effects after receiving the COVID-19 vaccine and boosters include fatigue, headache, and chills. These symptoms are indicative of the immune system responding to the vaccine and typically last up to 72 hours. The immune system's response to a vaccine is a sign that the body is learning to protect itself, often manifesting as temporary tiredness or mild discomfort. Other vaccines, such as the flu shot and Tdap, also commonly cause similar temporary side effects like tiredness, aches, and soreness at the injection site. For infants and young children, DTaP, IPV, and Hib vaccines can lead to crankiness, tiredness, or reduced appetite. 
