September 5, 2020

The statement is meant to reassure the public that the companies will not seek a premature approval of vaccines under pressure from the Trump administration.

The country’s ambitions to become a global power, lift its poor and update its military have been set back by a sharp economic plunge, soaring infections and a widening sense of malaise.

Pandemic policies at tech companies have created a rift between parents offered more benefits and resentful workers who don’t have children.

As he has done with other aspects of the presidency, Donald J. Trump has redefined the practice in ways that have unsettled even some Republicans.

The intelligence wars over vaccine research have intensified as China and Russia expand their efforts to steal American work at both research institutes and companies.