In a recent study, researchers found the effectiveness of the Pfizer and Moderna COVID-19 vaccines against infection dropped from 91% before the Delta variant became dominant to 66% afterward. Scientists have been examining the real-world performance of the two vaccines since they were first authorized among healthcare personnel, first responders, and other frontline workers. The […]
The post COVID-19 vaccines are 66% effective against Delta variant appeared first on Knowridge Science Report.
Source:: Knowridge Science Report
NASA Chooses Spacex To Launch A Self Propelled Space Station To The Moon