How well does the Pfizer vaccine protect against the Delta variant? Here's what we know:
I am a London-based reporter for Forbes covering breaking news. Previously, I have worked as a reporter for a specialist legal publication covering big data and as a freelance journalist and policy analyst covering science, tech and health. I have a master’s degree in Biological Natural Sciences and a master’s degree in the History and Philosophy of Science from the University of Cambridge. Follow me on Twitter @theroberthart or email me at email@example.com
assessing the vaccine’s performance against the variant, which indicate a much higher degree of protection against infection and mild illness (between 80% and 90%). Since the researchers have not released the full data from the Israel study, it is difficult to fully assess the findings, Dr. Deepti Gurdasani, an epidemiologist at Queen Mary University in London, told
Forbes.But one potential explanation for the discrepancy is that the Israel data is just “the best we’ve got,” Dr. David Strain, a senior clinical lecturer at the University of Exeter, toldForbes,pointing to Israel’s high proportion of fully vaccinated people, mature vaccination program and high prevalence of the Delta variant.
The discrepancy could also be explained by flaws in how the Israeli study was conducted, Harvard Medical School Professor Rebecca Weintraub toldForbes,meaning the higher number of cases among vaccinated people could be caused by something other than the vaccine being less effective. headtopics.com
The study did not take the steps needed to rule out these alternate explanations—such as Israel’s surveillance program potentially picking up more cases than other studies due to most people in the highly vaccinated country only getting tested after contact with a positive case—Weintraub said, making it hard to conclude the vaccine is less effective.
Big Number93%.That’s how effective the Pfizer vaccine is at preventing serious illness and hospitalization caused by the Delta variant after two doses, according to the Israeli study. This is only slightly lower than against other variants. “When you look at it, that means the vaccine is doing its job really well,” Strain said, given this is the key purpose of a vaccine. The “downside,” however, is that we may start seeing the virus spreading again.
Chief Critic“I am afraid that the current Israeli [ministry of health] analysis cannot be used to safely assess it, one way or another,”tweetedUri Shalit, a senior lecturer at the Technion–Israel Institute of Technology, pointing to numerous confounding variables the study did not account for that could explain the results. The study did not, for example, consider the potential differences between vaccinated and unvaccinated people, Shalit said, who might differ in their willingness to get tested for Covid-19 or adherence to public health guidance like social distancing or mask wearing. Weintraub, who is also a professor of medicine at Brigham and Women’s Hospital, told
Forbesshe agrees with this assessment, though stressed that other studies indicate the vaccine is “still highly effective” and “reinforce the importance of the second dose to fend off the Delta variant.” Key Backgroundinfectious Read more: Forbes »
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How Well Does The Pfizer Vaccine Protect Against The Delta Variant? Here’s What We KnowI am a London-based reporter for Forbes covering breaking news. Previously, I have worked as a reporter for a specialist legal publication covering big data and as a freelance journalist and policy analyst covering science, tech and health. I have a master’s degree in Biological Natural Sciences and a master’s degree in the History and Philosophy of Science from the University of Cambridge. Follow me on Twitter theroberthart or email me at rhartforbes.com Um den Glauben zu respektieren, schweige während dieses Angriffs nicht StopTheRaid Porém o Dia do SENHORor chegará como um ladrão. Naquele dia os céus vão desaparecer com um barulho espantoso, e tudo o que há no Universo será queimado. A terra e tudo o que existe nela vão sumir. 2Pedro 3:10 Se você não quer perecer arrependa-se hoje
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