Trump urges slowdown in Covid-19 testing, calling it a 'double-edge sword'

US President Donald Trump on Saturday told thousands of cheering supporters he had asked US officials to slow down testing for the novel coronavirus, calling it a "double-edged sword" that led to more cases being discovered.

US President Donald Trump speaks at his first re-election campaign rally in several months in the midst of the coronavirus disease (Covid-19) outbreak, at the BOK Center in Tulsa, Oklahoma, US, June 20, 2020. REUTERS/Leah Millis

Trump said the United States had now tested 25 million people, far more than other countries.

"When you do testing to that extent, you're gonna find more people you're gonna find more cases. So I said to my people slow the testing down, please," Trump told a campaign rally in Tulsa, Oklahoma, where many supporters were not wearing face masks.

A White House official said Trump was joking about his call for a slowdown in testing.

"He was obviously kidding. We are leading the world in testing and have conducted 25 million + in testing," the official said.

Trump said his actions in blocking travelers from China and Europe had helped save "hundreds of thousands of lives." But he said the "radical fake news" media had not given him credit for doing what he called "a phenomenal job" responding to the outbreak.

In fact, several US states are reporting troubling spikes in coronavirus infection rates, mainly in the South and West, as Trump addressed America's largest indoor gathering in months.

Health experts say expanded diagnostic testing accounts for some, but not all, of the growth in cases. They also call it a key tool in fighting the spread of the disease, which had been detected in at least 2.23 million people across the United States as of Saturday.

Covid-19, the disease caused by the novel coronavirus, has killed more than 119,000 Americans to date, according to Reuters' running tally. A mounting volume of infections is elevating hospitalizations in some places.

In his remarks, Trump used terms such as "Kung Flu" virus and "Chinese virus" to refer to Covid-19. "That name gets further and further away from China, as opposed to calling it the Chinese virus," he said.

Trump's response to the outbreak has sapped his popularity.

The US president initially dismissed the threat of the coronavirus, and sparred with state governors as they tried to slow its spread. His approval ratings have dropped in recent weeks, and Democratic presidential candidate Joe Biden now has a 13-point lead over Trump.

Seventy-six percent of Americans remain concerned about the spread of Covid-19, according to the latest Reuters/Ipsos poll.