New York City’s school system, the largest in the U.S., has been temporarily blocked from imposing a mandate forcing teachers and other staff to get vaccinated against Covid-19, according to a ruling from a federal judge.

Hundreds of government departments have had to quickly learn how to present data to the public as Covid-19 spread from country to country across the globe. The resulting platforms—while sometimes flawed because of incomplete data, technology constraints or just awkward presentation have become a mainstay of the pandemic.

Public-health researchers seeking new ways to persuade vaccine holdouts to take coronavirus shots are turning to the strategies of the digital marketing industry to figure out how to win over the reluctant.

Erica Ollmann Saphire spent the past year and a half profiling the coronavirus, creating intricate three-dimensional images in her San Diego lab to understand its most problematic features. That information is now revealing the pathogen’s weak spots and ways to exploit them.

It was up to Centers for Disease Control and Prevention director Rochelle Walensky to sort out a crucial question: which Americans should be the first to get Covid-19 booster shots.

Walgreens Boots Alliance, Inc. has started to give booster shots for Covid-19 at drug stores across the U.S., the day after the Centers for Disease Control and Prevention issued guidelines on who should get them, the company said in a statement Friday.