The vaccines are now found to be sooooo effective and useful that a 4th dose is now recommended for those with compromised immune systems.
If the vaccine loses efficacy over time, then why not a 5th, 6th, 7th, 8th?
https://www.foxnews.com/health/cdc-covid-fourth-booster-dose-immunocompromised-people
If the vaccine loses efficacy over time, then why not a 5th, 6th, 7th, 8th?
https://www.foxnews.com/health/cdc-covid-fourth-booster-dose-immunocompromised-people