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Single-shot COVID-19 vaccines: Would they accelerate the fight against coronavirus?


Dubai: The landscape of single-dose vaccines against COVID-19 just got more interesting. On Sunday, US health authorities approved the Janssen vaccine as a single-shot against COVID, with 78% efficacy. This is seen as a “game changer” in the global counter-coronavirus drive.
Data from the clinical trials and massive vaccination rollouts lead some experts to make a case for single shots from Pfizer and Moderna vaccines, too. The latter two are messenger RNA vaccines currently being rolled out in North America, Europe and the Middle East as a double dose.
With millions of doses per day being administered, there’s a decent amount of information for data scientists to crunch. Some experts argue this delayed or “fractional” dosing, could help the world achieve herd immunity sooner. Other scientists oppose the strategy. Here’s the lowdown on single-dose COVID shots: ....

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Blood plasma reduces risk of severe COVID-19 if given early


Katherine J Wu, The New York Times
Published: 07 Jan 2021 12:00 PM BdST
Updated: 07 Jan 2021 12:00 PM BdST
A patient recovered from COVID-19 donated plasma at the Hemotherapy Institute in La Plata, Argentina, in October. Agustin Marcarian/Reuters
A small but rigorous clinical trial in Argentina has found that blood plasma from recovered COVID-19 patients can keep older adults from getting seriously sick with the coronavirus if they get the therapy within days of the onset of the illness.
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The results, published Wednesday in the New England Journal of Medicine, are some of the first to conclusively point toward the oft-discussed treatment’s beneficial effects. They arrive nearly five months after the Food and Drug Administration, under pressure from President Donald Trump, issued the therapy an emergency green light for use in people hospitalised with COVID-19. ....

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Covid-19 Live Updates: U.S. Records Its Deadliest Day, With a Toll of Nearly 4,000


‘Things Will Get Worse,’ Fauci Warns, as U.S. Hits a New Daily Death Record
Last Updated
Feb. 1, 2021, 8:13 a.m. ETFeb. 1, 2021, 8:13 a.m. ET
Israel, its vaccine supplies dwindling, secures a new supply. And the Capitol Hill riot may turn out to be a super-spreader event, experts say.
Here’s what you need to know:
Waiting in line for injections at a drive-through vaccination site in Florida on Wednesday.Credit.Scott McIntyre for The New York Times
Dr. Anthony S. Fauci, the top infectious disease expert in the United States, predicted on Thursday that the daily death toll from the coronavirus would continue to rise for weeks to come, and counseled patience with the vaccination program gearing up across the nation. ....

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