Search

21 Jan 2022

Third dose of Pfizer's Covid-19 vaccine could combat Omicron variant

Third dose of Pfizer's Covid-19 vaccine could combat Omicron variant

Third dose of Pfizer's Covid-19 vaccine could combat Omicron variant

Pfizer has said that a booster dose of its Covid-19 vaccine may protect against the new Omicron variant even though the initial two doses appear significantly less effective.

The drug company and its partner BioNTech said lab tests showed a booster dose increased by 25-fold the level of so-called neutralising antibodies against Omicron.

Pfizer announced the preliminary laboratory data in a press release and it has not yet undergone scientific review.

The companies are working to create an Omicron-specific vaccine in case it is needed.

Scientists have speculated that the high jump in antibodies that comes with a third dose of Covid-19 vaccines might be enough to counter any decrease in effectiveness.

Antibody levels predict how well a vaccine may prevent infection with the coronavirus but they are just one layer of the immune system’s defences.

Pfizer said two doses of the vaccine may still induce protection against severe disease.

“Although two doses of the vaccine may still offer protection against severe disease caused by the Omicron strain, it’s clear from these preliminary data that protection is maximised with a third dose of our vaccine,” Pfizer CEO Albert Bourla said.

To continue reading this article for FREE,
please kindly register and/or log in.


Registration is absolutely 100% FREE and will help us personalise your experience on our sites. You can also sign up to our carefully curated newsletter(s) to keep up to date with your latest local news!

Register / Login

Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.

Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.