CDC WARNS against travel, large gatherings for the Thanksgiving holiday.

ATLANTA — The Centers for Disease Control and Prevention updated its Thanksgiving coronavirus guidelines on Monday and Tuesday, warning against travel and recommending much smaller gatherings during the annual American tradition.

Thanksgiving travel is typically the nation’s busiest transportation day of the year. “Staying home is the best way to protect yourself and others,” the CDC said.

While the organization isn’t recommending canceling the holiday, it is recommending smaller dinners with people who live in single households; contact-free meal deliveries; virtual dinners; watching events on TV at home; and Black Friday and Cyber Monday online shopping only.

Moderate-risk activities are listed as small outdoor dinners and small outdoor sports events with safety precautions in place. Highrisk activities are crowded stores, parades and large indoor gatherings.

The CDC said older adults and others at heightened risk of severe illness should avoid gathering with people outside their households.

Experts point to Canada, where Thanksgiving was celebrated Oct. 12. Clusters of cases tied to family gatherings followed.

Anyone traveling is urged to check travel restrictions, get a flu shot, wear a mask, wash hands and practice social distancing, among other measures.

Johns Hopkins University of Medicine has been tracking the pandemic’s spread over the globe. New daily confirmed cases are up more than 60% during the past two weeks, to an average of nearly 109,000 a day. Average daily cases are on the rise in 48 states.

The U.S. accounts for about one-fifth of the world’s nearly 51 million confirmed cases. U.S. coronavirus deaths are up 18% during the past two weeks, averaging 939 every day. The virus has now killed more than 238,000 Americans.

Projected election winner Joe Biden and his running mate Kamala Harris were briefed virtually Monday morning on the coronavirus pandemic by a task force of experts their transition team announced only hours earlier. Biden and Harris were then scheduled to hold hours of internal meetings about transitioning to the White House in January.

“We could save tens of thousands of lives if everyone would just wear a mask for the next few months. Not Democratic or Republican lives, American lives,” Biden said. “Please, I implore you, wear a mask.”

Biden said he wants to ramp up production of personal protective equipment and testing supplies, saying, “The bottom line: I will spare no effort to turn this pandemic around.”

Public health officials warn the nation is entering the worst stretch yet for covid-19 as winter sets in and the holiday season approaches, increasing the risk of rapid transmission as Americans travel, shop and celebrate with loved ones.

“The next two months are going to be rough, difficult ones,” said Dr. Albert Ko, an infectious disease specialist and department chairman at the Yale School of Public Health. “We could see another 100,000 deaths by January.”