CNS TV Second COVID-19 booster shot gets mixed views from adults 50+ COLLEGE PARK, Md. – The FDA recently authorized a fourth COVID-19 shot to be taken four months after the first booster. Some people have debated whether getting another vaccine is necessary. Share this:Click to share on X (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window) March 31, 2022