Pfizer Begins Testing COVID-19 Vaccine Targeted to Omicron | Health and Fitness
TUESDAY, Jan. 25, 2022 (HealthDay News) — Pfizer Inc. announced Tuesday that it has launched a trial that will compare its existing COVID-19 vaccine against a new version tailored to beat back the highly contagious omicron variant.
“While current research and real-world data show that boosters continue to provide a high level of protection against severe disease and hospitalization with omicron, we recognize the need to be prepared in the event this protection wanes over time and to potentially help address omicron and new variants in the future,” Kathrin Jansen, senior vice president and head of vaccine research & development at Pfizer, said in a company statement. “Staying vigilant against the virus requires us to identify new approaches for people to maintain a high level of protection, and we believe developing and investigating variant-based vaccines, like this one, are essential in our efforts towards this goal.”
The new U.S. study will include up to 1,420 healthy adults, aged 18 to 55 years, and will assess the updated, omicron-targeted vaccine for use as a booster or for primary vaccinations. The modified vaccine’s safety and how it bolsters the immune system in comparison to the original vaccine will be examined by the researchers. Volunteers will receive varying vaccine doses and will be monitored for how long virus-fighting antibodies remain at high levels after vaccination, so it could take months for the full study results to be available.