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MSNBC Stephanie Ruhle Reports September 24, 2021 13:22:00

30. i think what people what some people are worried about with what dr. walensky has done is she basically said, no, i think it s okay to give it to the person greater than 18 even if they are not high risk. the problem is when pfizer did its phase three trial, two-dose trial it was a 40,000 person trial. when they did these phase three trial for the three doze vaccine it was a 306 person trial. i think that s why that all came down that way. heidi, you are at a vaccination center so obviously the people there who are getting their booster, they re happy about it, otherwise they wouldn t be there. give us a general sense of the amount of people they are expecting, the enthusiasm. if people sound skeptical at all, i mean, think back to the spring when you and i were talking our biggest worry was people cutting in line because we desperately were trying to

Rochelle walenskyPhase three trialPerson trialVaccination centerWouldn tHeidi przybyla

MSNBC Hallie Jackson Reports September 23, 2021 19:12:00

then go to people who are at high risk of severe disease and then go to people who work in places like hospitals, grocery stores, pharmacies. a high risk of transmission of the virus. we ll see. they may choose to test the water with one foot at a time. if you think about this for a second. when pfizer did its trial, its phase three trial looking for people over 65 years of age. 20,000 got the placebo. that was a big safety and efficacy platform to stand on. when submitting this vaccine a third dose, basically 306 people that got a third dose. so the safety profile is not quite as robust as you d like, as was for the original. may choose to go more slowly. we ll see. and why did the panel recommend thisbooster and do up see it approved for the wider

Grocery storesAge 20000 got the placeboPhase three trialSafety profileRecommend thisbooster

MSNBC Craig Melvin Reports August 18, 2021 15:30:00

that higher levels of anti-body are associated with higher levels after vaccine efficacy. this is referred to as an immune correlate. this is a paper recently published. it shows a model of vaccine efficacy based on the phase three trial showed that four weeks after the second dose that what you have is a neutralization of one to 100 that goes up from the vertical red line. that gives you an efficacy of 91%. if you look at the dark black line going from left to right, as you go further up you get a higher degree of efficacy. so the higher the neutralization, the higher degree of efficacy of the vaccine in this model.

Vaccine efficacyAnti bodyPhase three trialRed line

MSNBC All In With Chris Hayes February 3, 2021 08:50:30

MSNBC All In With Chris Hayes February 3, 2021 08:50:30
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CNN Anderson Cooper 360 January 29, 2021 05:37:15

CNN Anderson Cooper 360 January 29, 2021 05:37:15
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