Where things stand after Thanksgiving.

• Around 136,000 new U.S. coronavirus cases were reported yesterday, a substantial decline from last week. However, as David Leonhardt explained in today’s edition of The Morning newsletter, case numbers and deaths might have been artificially reduced in the last few days because of a slowdown in testing and reporting around Thanksgiving. Hospitalization is a better indicator: 91,635 people were in hospitals with Covid-19 as of Nov. 28, almost twice as many as there were on Nov. 1, and triple the number on Oct. 1.
• Despite warnings from public officials, millions of Americans traveled for Thanksgiving. The Transportation Safety Administration recorded about 800,000 to one million people passing through T.S.A. checkpoints on each of the days before and after the holiday. That was far lower than previous years, but much higher than epidemiologists hoped to see.
• The drug maker Moderna said it would apply to the Food and Drug Administration for emergency approval of its vaccine. If approved, the first doses could be given as early as Dec. 21. Moderna is the second company, after Pfizer, to apply for approval from the F.D.A. It said it was on track to have enough doses for 10 million people by the end of the year, and up to 500 million people in 2021.

• A vaccine from AstraZeneca and the University of Oxford had a bumpier week. AstraZeneca acknowledged that some of the vaccine dosages in its trials — in which some volunteers were given half the recommended dose — were the result of a mistake. A series of other irregularities and omissions in the company’s initial disclosure also eroded confidence in its shot, and the company said it would begin a new global trial to assuage concerns.

• Our colleague Apoorva Mandavilli reported yesterday that the Centers for Disease Control and Prevention is considering shortening the recommended isolation period for people with Covid-19 and may issue new guidelines as early as next week. The possible change is based on a new analysis of research that suggests people with Covid-19 are most infectious about two days before symptoms begin and for five days afterward.