The computer-generated set was one of many concessions that networks have made as the coronavirus pandemic shut down the upfronts, a series of springtime events where advertisers attend canapé-and-cocktail parties and celebrity-studded showcases meant to hype the fall television season.

The advertising industry is still feeling out how to do business in the pandemic.

Flexibility has never been more important as companies scrambled to adjust their reactions to the news: first opting for caution during the pandemic and then, in recent days, pausing some ad campaigns out of sensitivity to the nationwide protests against racism and police brutality.

The topic of production delays laid bare the effect of the pandemic.

TV viewership has surged during the pandemic, but companies have slashed budgets for commercials by more than 40 percent, according to the research firm Kantar.

Ad spots, which had grown steadily more expensive in recent years, have sold for 20 percent or more below their usual rates, media buyers said.

“Many advertisers are unable to commit to budgets, and many TV networks don’t have finished product to sell,” said Tim Nollen, an analyst with Macquarie Capital, in a note to investors last month.

Mass protests against police brutality that have brought thousands of people onto the streets in cities across America are raising the specter of new coronavirus outbreaks, prompting political leaders, physicians and public health experts to warn that the crowds could cause a surge in cases.

First, “start at no more than 50 percent of the exercise you were doing before Covid,” says Dr.

A number of studies of flu, rhinovirus, coronavirus and other microbes have shown that respiratory illnesses, including the new coronavirus, can spread by touching contaminated surfaces, particularly in places like day care centers, offices and hospitals.

Most people fall ill five to seven days after exposure, but symptoms may appear in as few as two days or as many as 14 days.

If possible, choose a window seat.

If the seat is hard and nonporous or leather or pleather, you can wipe that down, too.

If you don’t have a thermometer (they can be pricey these days), there are other ways to figure out if you have a fever, or are at risk of Covid-19 complications.

This is a shift in federal guidance reflecting new concerns that the coronavirus is being spread by infected people who have no symptoms.

Until now, the C.D.C., like the W.H.O., has advised that ordinary people don’t need to wear masks unless they are sick and coughing.

If you’ve been exposed to the coronavirus or think you have, and have a fever or symptoms like a cough or difficulty breathing, call a doctor.

recommends that you call your healthcare provider and explain your symptoms and fears.

Iger in February and then had to announce that Disney’s profit fell more than 90 percent in its most recent quarter