US Business

TikTok’s Chief Executive Kevin Mayer said he would be leaving the social-media platform about three months into the job, as the company comes under increasing pressure from the White House over its ties to China.

The Food and Drug Administration has granted emergency-use authorization to Abbott Laboratories for a $5 rapid-response Covid-19 antigen test that is roughly the size of a credit card.

Facebook says privacy changes that Apple has made to its newest operating system will cripple the social-media giant’s ability to serve targeted ads to iPhone users while they use outside apps.

Moderna said its experimental coronavirus vaccine induced immune responses in people aged 56 years and older that were comparable to those seen in younger adults in a small study.

Refineries, petrochemical facilities and ports along the Gulf Coast were closing as the hurricane strengthened to a Category 4 storm with 140-mile-an-hour winds barreling toward the Texas-Louisiana border.

McDonald’s said its investigation into former CEO Steve Easterbrook’s conduct is examining whether he covered up improprieties by other employees alongside allegations of potential misconduct within the human-resources department.

The U.S. business of Teva Pharmaceutical Industries has been indicted on charges the drugmaker fixed prices on generic drugs.

The carrier is preparing to downsize to cope with the coronavirus pandemic’s blow to travel demand, which isn’t expected to rebound for years.

The blue-chip index will include only one energy stock, Chevron, which will represent just 2.1% of the price-weighted index.

Thousands of restaurants and hotels along U.S. interstate highways closed during the pandemic, but most truck stops remained open to fuel the 18-wheelers that keep supply lines moving.