Covid is back. Is it time to pull out our masks again?

This is the Weekend Edition of Bloomberg Opinion Today, a roundup of the most popular stories Bloomberg Opinion publishes each week based on [Bloomberg]( This is the Weekend Edition of Bloomberg Opinion Today, a roundup of the most popular stories Bloomberg Opinion publishes each week based on web readership. New subscribers can [sign up here](. [Covid’s Back. Who’s Most Likely to Get It Again?]( — Lisa Jarvis A [new study]( is offering data to back one of the core assumptions about the spread of Covid: The intensity of exposure to the virus matters, and vaccines and prior infections can only help so much — but they do indeed help. The research, led by scientists at the Yale School of Public Health and published in Nature Communications, also reinforces the common-sense notion that masks and air filtration can augment the protection provided by a vaccine and lower the risk of getting the virus. Anyone watching Covid cases bubble back up in their community should take that to heart: Infections aren’t unavoidable, and the tools we’ve been using to protect ourselves are not just intuitive — and certainly shouldn’t be controversial. They’re increasingly backed up by evidence. Read the [whole thing](, free from the paywall. [Grayscale can be a Bitcoin ETF]( — Matt Levine [Ukraine’s Future Isn’t German or Israeli But Korean]( — Andreas Kluth [VinFast SPAC Silliness Will End in Tears]( — Chris Bryant [Five Key Questions About Medicare's New Drug Pricing]( — Lisa Jarvis [A Large Family Fortune Starts a Risky Transition]( — Andy Mukherjee [How China’s Downturn Could Save the World]( — David Fickling [3M’s Potential Earplug Payout Is Still Just the Beginning]( — Brooke Sutherland [At Goldman Sachs, Bonuses Can Buy Solomon Love]( — Paul J. Davies [Singapore’s Presidential Poll Isn’t Perfect. Vote Anyway]( — Karishma Vaswani More From Bloomberg Opinion Here’s what we’ve been listening to this week. - [Crash Course: Do Any Republicans Actually Want to Beat Trump?]( with Timothy L. O’Brien - [Bloomberg Opinion: UPS and the Fed and Wind ‘Turbinegeddon’]( with Conor Sen, Chris Bryant, Allison Schrager and Bobby Ghosh - [X Broadcast: BRICS Is Broken. Time To Scrap It.]( with Bobby Ghosh, Karishma Vaswani and Andreas Kluth Follow Us You received this message because you are subscribed to Bloomberg's Opinion Today newsletter. If a friend forwarded you this message, [sign up here]( to get it in your inbox. [Unsubscribe]( [Bloomberg.com]( [Contact Us]( Bloomberg L.P. 731 Lexington Avenue, New York, NY 10022 [Ads Powered By Liveintent]( [Ad Choices](