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And so, another working week will soon draw to a close. Not a moment too soon, yes? This is, you may recall, our treasured signal to daydream about weekend plans. Our agenda is rather modest. We plan to catch up on our reading, promenade with the official mascot and watch some footie on the telly. And what about you? This may be a good opportunity to catch up on chores or reach out to someone feeling isolated. Or you may want to place your bets on the fate of a certain someone in D.C. Well, whatever you do, have a grand time. But be safe. Enjoy — and wear a mask. …

The Covid-19 vaccine developed by Pfizer (PFE) and BioNTech (BNTX) appeared to work against a key mutation in highly transmissible new variants of the coronavirus discovered in the U.K. and South Africa, STAT notes. The result is evidence existing vaccines will be able to withstand some mutations without losing efficacy. But experts noted this vaccine and others will still need to be tested against other mutations of concern, and the new study only looked at one key mutation contained in the variants, not the full variants.

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