New study suggests Pfizer’s Covid-19 vaccine is far less effective at preventing infection and symptomatic illness with the Delta variant
The vaccine still provides very high levels of protection against hospitalization and severe illness caused by the Delta variant, the ministry said. , Pfizer and BioNTech noted that while real-world data from Israel show vaccine efficacy in preventing infection and symptomatic disease to decline six months post-vaccination, “efficacy in preventing serious illnesses remains high.
. The study did not, for example, take the steps needed to rule out alternative explanations for the lower efficacy, such as bias in who is tested for Covid-19.
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Pfizer Shot Just 39% Effective Against Delta Infection, But Largely Prevents Severe Illness, Israel Study SuggestsI 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
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