The best way to stop the spread of the coronavirus is to get vaccinated. All of the COVID-19 vaccines are highly effective at preventing severe illness, hospitalization and death, and they are all safe and generally well tolerated. Some people experience mild to moderate side effects, including injection site reactions, fatigue and headache. Flu-like symptoms are not unusual after receiving vaccines and are an indication that the immune system is working. The CDC recommends that everyone who is eligible remain up to date with their COVID-19 vaccines.