During the swine flu outbreak of 1976, President Gerald R. Ford announced at a news conference that the government planned to vaccinate “every man, woman and child in the United States.” Mr. Ford himself was photographed receiving the vaccine in the White House as part of a public awareness campaign.
Responding to the Ebola outbreak in West Africa in 2014, President Barack Obama visited the Centers for Disease Control and Prevention in Atlanta to announce that the administration would send as many as 3,000 people to the region.
Mr. Trump, in contrast, contradicted his own health experts in a news conference Wednesday evening, insisting that the spread of the virus was not inevitable, and excoriating two of his favorite foils, Speaker Nancy Pelosi and Senator Chuck Schumer, the minority leader, for “trying to create a panic.”
For three and a half years, Mr. Trump has repeatedly proved an unreliable narrator on a range of subjects.
At times, he has exaggerated threats, like talking up the caravans of migrants he claimed were storming the southern border before the 2018 midterm elections. Other times, he has minimized potentially serious dangers that could be politically damaging, like the renewed nuclear threat posed by North Korea after the failure of his talks with its leader, Kim Jong-un, and now, the global spread of the coronavirus, which he has persistently tried to play down.
In his response to the coronavirus, Mr. Trump has made inaccurate or questionable claims, twice misstating the number of Americans infected with the virus and insisting that it “miraculously goes away” when warmer spring weather arrives — a prediction that health experts have said is premature.
He based that prediction on a comment made at one of his briefings, when an expert noted that temperatures can affect the spread of viruses. Mr. Trump has used that data point as evidence in saying in public and in private to guests at his Mar-a-Lago resort in Palm Beach, Fla., that the global outbreak will be behind him by April.