![]() And while the difference in antibody levels sounds impressive, it’s probably not all that meaningful in terms of protecting you in the real world. It’s possible that differences in the study subjects led to the difference in results. Second place went to people who got two doses of Pfizer, followed by Moderna.īut it’s important to note that the small study groups weren’t designed to compare which shot was best, and the first studies used a full dose (100 micrograms) of Moderna, and not the half dose that has been approved. Those who received the Moderna vaccine for their first two doses and Moderna as a booster had the highest antibody levels. All the booster shots stimulated a neutralizing antibody response, but there were differences. The study looked at nine different combinations of vaccines and boosters, with 50 volunteers in each group.Įarly results looked at neutralizing antibodies, which are the specific antibodies that stop the virus and protect you from getting sick. In June, the National Institutes of Health began its own study looking at what happens when people fully vaccinated with Pfizer, Moderna or Johnson & Johnson get a booster of the same vaccine or switch to a new one. It depends on which set of studies you consider. “They’re all safe, they’re all going to give you a boost, and they’re all going to protect you against severe disease and death.” So what did the studies show? Lyke, a professor at the University of Maryland School of Medicine who presented early results of a booster shot trial to the F.D.A. “Part of the beauty of the mix and match is it enables people no matter where they are - rural or in the city - to have a choice,” said Dr. But the idea is now gaining traction, even as evidence builds that the virus emerged from a Wuhan market. Covid’s Origins: A lab leak was once dismissed by many as a conspiracy theory for the origin of Covid-19. ![]() ![]() plans to allow older and immunocompromised Americans to get a second updated Covid booster shot in the near future. ![]() Life Expectancy: In 2020, the coronavirus pandemic caused the death rate in New York City to climb about 50% over the previous year, according to new data, and life expectancy dropped citywide by 4.6 years. ![]()
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