#parent | #kids | Your Thursday Briefing – The New York Times

China is testing restaurant workers and delivery drivers block by block. South Korea tells people to carry two types of masks for differing risky social situations. Britain is targeting local outbreaks in what Prime Minister Boris Johnson calls “Whac-A-Mole.”

As mass infections strike even in places that had seemed to tame the coronavirus, officials are adjusting to the reality that the disease is here to stay. They are turning to targeted and fast-but-flexible approaches to stop third or fourth waves.

While the details differ, the strategies call for giving governments flexibility to tighten or ease as needed. They require some mix of intensive tracking, lightning-fast response times, border management and constant reminders to their citizens.

Quotable: “It’s always going to be with us,” said Simon James Thornley, an epidemiologist from the University of Auckland in New Zealand. “I don’t think we can eliminate the virus long term. We are going to need to learn to live with the virus.”

Kim Jong-un, the country’s leader, has suspended plans to ​deploy more troops​ and resume military exercises along the world’s most heavily armed border.

His decision on Wednesday came fewer than 10 days after the North blew up the joint inter-Korean liaison office — one of the actions that threatened to reverse the fragile easing of tensions on the Korean Peninsula.

How would the polio vaccine work as treatment for coronavirus?

The idea is that a viral infection causes a reaction in the body and a release of something called “interferons” that interfere with viral replication. Before the immune system develops a specific antibody, there’s this innate immune system, researchers told me. If you have an active viral infection in your intestinal system, like polio virus, it would release all these interferons that interfere with the replication of other viruses.

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