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Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - study

Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - study

7/26/2021 2:55:00 PM

Mixed AstraZeneca-Pfizer shot boosts COVID antibody level - study

A mixed vaccination of first AstraZeneca (AZN.L) and then a Pfizer (PFE.N) COVID -19 shot boosted neutralizing antibody levels by six times compared with two AstraZeneca doses, a study from South Korea showed.

The study involved 499 medical workers - 100 receiving mixed doses, 200 taking two doses of the Pfizer/BioNTech(22UAy.DE)shot and the remainder getting two AstraZeneca shots.All showed neutralizing antibodies, which prevent the virus from entering cells and replicating, and the result of the mixed schedule of vaccines showed similar amounts of neutralizing antibodies found from the group that received two Pfizer shots.

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A British study last month showed similar results - an AstraZeneca shot followed by Pfizer produced the best T-cell responses, and a higher antibody response than Pfizer followed by moreThe data provides further support for the decision of several countries to offer alternatives to AstraZeneca as a second shot after the vaccine was linked to rare blood clots.

The South Korean study also analysed neutralizing activity against major variants of concern, the Korea Disease Control and Prevention Agency (KDCA) said.None of the groups demonstrated reduced neutralising activity against the Alpha variant, first identified in Britain, but the neutralization titre decreased by 2.5 to 6 fold against Beta, Gamma and Delta, first detected in South Africa, Brazil and India respectively.

Reporting by Sangmi Cha; Editing by Miyoung Kim and Nick MacfieOur Standards:More from ReutersSign up for our newsletterSubscribe for our daily curated newsletter to receive the latest exclusive Reuters coverage delivered to your inbox. Read more: Reuters Top News »


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Told you now humanity is expected like really good little experimental pigs to go next stage and have cocktail jab.What next when virus mutates AGAIN and we still are not on top issue? Compared to 2 doses of pfizer fg? 💉💉 Cocktails, no thanks I just mix it today 😅 Somebody outhere is trying to save AstraZeneca vaccine as many people refuse it.

WSJ News Exclusive | Covid-19 Pill Race Heats Up as Japanese Firm Vies With Pfizer, MerckJapan’s Shionogi has started human trials for a once-a-day drug designed to neutralize the coronavirus in less than a week as Pfizer and Merck carry out later-stage tests. There are already ones out there: azythromicine plus Invermectin. Why keep denying it? 🙏 Better approach

FDA Grants Priority Review Status to Pfizer VaccineThe U.S. Food and Drug Administration has granted priority review status to the Pfizer/BioNTech coronavirus vaccine for people 16 and up.

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WSJ News Exclusive | Covid-19 Immunity Wanes, but Third Shot Still Rarely Needed, BioNTech CEO SaysCovid-19 immunity wanes in people fully vaccinated with the Pfizer-BioNTech shot, but most still won’t need a third dose, the CEO of BioNTech said good luck Would you like to create a second source of income for yourself from the comfort of your home? It won’t interfere with your job or whatever you do. DM me for more details

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NPR Cookie Consent and ChoicesThose with interests in the pharmaceutical industry will win. Wait for it. Better if the (pharma funded) federal health advisors: a) weren't overseeing record sickness & sickness spending, b) knew times of widespread health exist, c) explained the traditional antiviral actions, d) recognized Amazon's health care offering. Too much regulatory capture.