Winter resorts across the country have spent months developing their plans for the new ski season. They require masks and distancing, and many have people reserve their time on the slopes.

His comments came even as the U.S. Supreme Court on Thursday ordered a federal district court to reexamine its previous support for restrictions on indoor religious services in California.

Experts say low-risk people in the U.S. will likely be immunized before many high-risk people in poor countries.

As state health officials make plans for a vaccine, many questions remain unanswered. In Pennsylvania, the top health official says she does not know how many doses will be made available initially.