You may experience an immune response after receiving the first and/or second dose of the vaccine which may include a headache, muscle pains, fatigue, chills, fever, and pain at the injection site. This does not mean that the vaccine has given you COVID-19. It signifies that the vaccine is causing your body’s immune system to create antibodies to fight off the virus. In other words, if you feel some discomfort, then the vaccine is doing its job! It’s likely the discomfort will go away after one day, or even sooner. In some cases, an asymptomatic or pre-symptomatic person may unknowingly be infected with COVID-19 when they get the vaccine. If they later have symptoms of COVID-19 or test positive for it, it does not mean they got COVID-19 from the vaccine.