This week’s remarkable character assault by some top White House advisers on Anthony S. Fauci, the nation’s leading infectious-disease expert, signified President Trump’s hostility toward medical expertise and has produced a chilling effect among the government scientists and public health professionals laboring to end the pandemic, according to administration officials and health experts…

Though Trump does not automatically distrust the expertise of public health officials, he is averse to any information or assessment that he considers “bad news,” that compromises his economic cheerleading message or that jeopardizes his reelection, according to several administration officials and other people with knowledge of the dynamic…

“It seems that some are more intent on fighting imagined enemies than the real enemy here, which is the virus,” said Thomas R. Frieden, a former CDC director and president of Resolve to Save Lives…

Trump in recent weeks has been committing less of his time and energy to managing the pandemic, according to advisers, and has only occasionally spoken in detail about the topic in his public appearances. One of these advisers said the president is “not really working this anymore. He doesn’t want to be distracted by it. He’s not calling and asking about data. He’s not worried about cases.”