![South Africa study suggests Omicron could displace Delta South Africa study suggests Omicron could displace Delta](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-12/61640682948_OMICRON.jpg)
South Africa study suggests Omicron could displace Delta
Research shows that people who were infected with Omicron, developed enhanced immunity to the Delta variant.
Tue Dec 28 2021
![Study suggests Pfizer COVID-19 vaccine may only partially protect against Omicron Study suggests Pfizer COVID-19 vaccine may only partially protect against Omicron](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-01/81611702699_TBNURSEHUNGARYVACC.jpg)
Study suggests Pfizer COVID-19 vaccine may only partially protect against Omicron
There was "a very large drop" in neutralization of the Omicron variant relative to an earlier strain of COVID-19, Alex Sigal said.
Wed Dec 08 2021