![Spreading version of Omicron resists all but one drug; T cell defense vs Omicron deficient in some Spreading version of Omicron resists all but one drug; T cell defense vs Omicron deficient in some](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2022-02/61644802683_VACCINE.jpg)
Spreading version of Omicron resists all but one drug; T cell defense vs Omicron deficient in some
Here's a summary of some recent studies on COVID-19.
Mon Feb 14 2022
![Omicron cannot escape T cells; boosters protect households from Omicron Omicron cannot escape T cells; boosters protect households from Omicron](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-12/61640830224_COVID.jpg)
Omicron cannot escape T cells; boosters protect households from Omicron
Booster-vaccinated people were 56% less likely to become infected in the Omicron households than those who had not received a booster jab.
Thu Dec 30 2021
![New COVID jab offers hope for immunocompromised New COVID jab offers hope for immunocompromised](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-11/61637749921_MUNICh.jpg)
New COVID jab offers hope for immunocompromised
The jab, known as CoVac-1 was shown to produce a strong white blood cell or T-cell response in all 36 phase one trial participants.
Wed Nov 24 2021
![Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - Study Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - Study](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-07/61627287533_PfizerAZ.jpg)
Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - Study
A British study last month showed similar results - an AstraZeneca shot followed by Pfizer produced the best T-cell responses.
Mon Jul 26 2021
![Oxford COVID vaccine produces strong immune response from booster shot - Study Oxford COVID vaccine produces strong immune response from booster shot - Study](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-05/81620108993_AstraZeneca.jpg)
Oxford COVID vaccine produces strong immune response from booster shot - Study
Researchers say a third shot of the Oxford-AstraZeneca COVID-19 vaccine produces a strong immune response.
Tue Jun 29 2021
![Mix-and-match approach boosts immune response of AstraZeneca shot, study finds Mix-and-match approach boosts immune response of AstraZeneca shot, study finds](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-05/41621734924_Vaccines.jpg)
Mix-and-match approach boosts immune response of AstraZeneca shot, study finds
The study, called Com-COV, compared mixed two-dose schedules of Pfizer and AstraZeneca vaccines.
Tue Jun 29 2021
![In fight against COVID variants some firms target T cell jabs In fight against COVID variants some firms target T cell jabs](https://resizer-awani.eco.astro.com.my/tr:w-177,h-100,q-100,f-auto/https://img.astroawani.com/2021-04/41617772993_SouthKorea.jpg)
In fight against COVID variants some firms target T cell jabs
Will the COVID-19 vaccines stay effective against virus variants spreading across the globe?
Mon May 10 2021