Tweet from EricTopol at March 20, 2022 at 11:33AM
Whereas the 3rd shot had durable protection vs severe illness for 4+ months, the 4th (vs Omicron, w/ far more immune evasion), may be limited
https://t.co/2kUqPhLnHX— Eric Topol (@EricTopol)
Mar 20, 2022
from http://twitter.com/EricTopol