U.S. Bets on Covid-19 Boosters’ Efficacy Against a Changing Virus, as Doses Roll Out - The Wall Street Journal

1. U.S. Bets on Covid-19 Boosters’ Efficacy Against a Changing Virus, as Doses Roll Out  The Wall Street Journal
2. Covid cases are dropping in the U.S. Is the delta wave over?  NBC News
3. What we know so far about the Delta Covid sub-variant AY.4.2  The Independent
4. New COVID-19 Variant 'AY 4.2' Infects Seven People in Karnataka, Triggering Fears of a Third Wave | The Weather Channel - Articles from The Weather Channel | weather.com  The Weather Channel
5. There’s a new Delta variant. Here’s what we know about it  The Boston Globe

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