Pfizer says tweaked Covid-19 shots boost omicron protection

Pfizer said Saturday that its modified Covid-19 vaccine provided better protection against the omicron variant.

Pfizer announced Saturday that tweaking its Covid-19 vaccine to better target the omicron variant is safe and works — just days before regulators debate whether to offer Americans updated booster shots this fall.

The vaccines currently used in the U.S. still offer strong protection against severe Covid-19 disease and death — especially if people have gotten a booster dose. But those vaccines target the original coronavirus strain and their effectiveness against any infection dropped markedly when the super-contagious omicron mutant emerged.

Full coverage of the Covid-19 pandemic

Now with omicron’s even more transmissible relatives spreading widely, the Food and Drug Administration is considering ordering a recipe change for the vaccines made by both Pfizer and rival Moderna in hopes that modified boosters could better protect against another Covid-19 surge expected this fall and winter.

Pfizer and its partner BioNTech studied two different ways of updating their shots — targeting just omicron, or a combination booster that adds omicron protection to the original vaccine. They also tested whether to keep today’s standard dosage — 30 micrograms — or to double the shots’ strength.

https://www.nbcnews.com/health/health-news/pfizer-says-tweaked-covid-19-shots-boost-omicron-protection-rcna35340


Post ID: 27c94419-a9f0-443d-8dbc-addaa1e4fbd1
Rating: 5
Created: 1 year ago
Your ad can be here
Create Post

Similar classified ads


News's other ads