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Do Delta 'breakthroughs' really mean vaccine protection is waning, and are boosters the answer? | Science sciencemag.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencemag.org Daily Mail and Mail on Sunday newspapers.
Absolutely Maybe We’ve well and truly reached cherry-picking season on Covid vaccine data! It’s definitely easier to fall into the trap of claims based on a biased selection of information – and harder to keep up with developments. With over 1 billion doses of Covid vaccines injected globally, the amount of datasets and studies is vast. Fortunately, there are now well over half a million people in phase 3 trials for Covid vaccines, providing an important base of critical information. That number could get close to a million in the coming months. A big thank you to everyone participating in the trials that made this possible. ....
Science’s COVID-19 reporting is supported by the Heising-Simons Foundation. Vaccine regulators have delivered a clear verdict: In most settings, the benefits of the COVID-19 vaccines made by AstraZeneca and Johnson & Johnson (J&J) far outweigh the small risk they will cause an unusual and sometimes deadly clotting disorder. But many questions remain about who is most at risk, how the risk-benefit calculus changes when cases fall, and what the side effects mean for the future of these vaccines, which use adenoviruses to ferry the gene for SARS-CoV-2’s spike protein into human cells. A major concern is how the rest of the world will respond to some European countries’ moves to limit the use of the AstraZeneca and J&J vaccines, and the brief suspension of the J&J shot in the United States. The AstraZeneca vaccine named Vaxzevria, or Covishield when it’s produced by the company’s Indian partner, the Serum Institute of India is the cornerstone of the COVID-19 Vaccines ....