![]() ![]() But we're seeing now that the results with the two doses is actually much better with the Johnson vaccines. But given the timing of that - of their vaccine and when their data came out, there was discussion about, well, we're getting a better efficacy than we thought we would get for any of these vaccines, so perhaps the one dose would be sufficient. When this vaccine was developed, part of their study did include a two-dose vaccine. And if you're starting out with the lower efficacy, you may need a booster. So there is some concern about waning immunity. NORMAN BAYLOR: You may recall that the Johnson vaccine had a lower efficacy than the Moderna vaccine and the Pfizer vaccine. This is how he explains the FDA panel's recommendation of a second Johnson & Johnson dose for everyone who got the first shot. He holds a doctorate in molecular biology, and he is the former director of the FDA's Office of Vaccines Research and Review. Baylor is president and CEO of Biologics Consulting. We asked Norman Baylor to help us sort through all this. And then the same panel advised that recipients of the Johnson & Johnson single-dose vaccine ages 18 and older become eligible for a second shot. Last week, a panel of experts advising the Food and Drug Administration made a similar recommendation for Moderna booster shots. ![]() Booster shots of the Pfizer vaccine were approved for emergency use last month for individuals 65 and older and for others deemed to be at higher risk from COVID. It's been coming in fast in recent weeks, and it can be confusing. Let's start today with that new information about coronavirus vaccines and booster shots. ![]()
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