The White House says President Biden has ordered U.S. intelligence agencies to determine whether the novel coronavirus escaped from a research laboratory in Wuhan, China. This comes amid mounting calls on the World Health Organization to further investigate the origins of COVID-19.

Cases continue to fall around the United States, with an average of fewer than 25,000 infections per day. Vaccinations keep falling, too, with an average of 1.7 million doses administered daily. That’s about half of the peak vaccination rate seen in April.

States are increasingly offering prizes to entice people to get shots. On Wednesday, Ohio gave away the first of five weekly $1 million “Vax-a-Million” prizes to Abbigail Bugenske, a recent college graduate and engineer, while 14-year-old Dayton student Joseph Costello won a full-ride scholarship to Ohio public colleges. Colorado, Oregon, New York and New Jersey are offering similar prizes.

Meanwhile, the Baltimore City School Board said this week it will not hold back students who are failing classes due to the pandemic. Students who struggled during unprecedented online classes will be given additional time and customized instruction to make up gaps in their education.