U.S. regulators signed off on the booster shots for Americans who got the vaccine the from the companies Moderna and Johnson and Johnson. They recommend that you get the booster about six months after you got your second shot. The FDA voted to make senior citizens and younger adults with health problems the priority to get receive the booster first.
Federal regulators are expected to authorize the mixing and matching of COVID-19 booster shots this week. This means that people can receive a different booster than what they were originally given for their vaccine. The FDA has said that the mRNA vaccines from Pfizer and Moderna have been proven more effective than the vaccine from Johnson and Johnson.