The journal report was released amid the development of several different mutations in the coronavirus spike protein, attributed to the Delta variant. Read More
Researchers showed that immunity might last for years and even a lifetime, preventing infections even among variants. Read More
Pfizer plans authorization with the U.S. Food and Drug Administration for full approval of the vaccine by September 2021. Read More
The study reported no serious safety concerns. Read More
It is the first known vaccine approved by the WHO for immediate use and distribution. Read More
Oxford's COVID-19 vaccine may not be as effective as previously thought, new research suggests. Read More
