On Sunday, President Trump retweeted a call to fire Dr. Anthony Fauci to his 76.8 million followers.

Earlier in the day, Fauci had told CNN that "no one is going to deny" that lives could've been saved if the US had implemented containment measures earlier in the novel coronavirus outbreak.

A week ago, at a White House briefing, Trump stopped Fauci from weighing in on using hydroxychloroquine, a malaria drug, for people with COVID-19, the illness caused by the coronavirus.

It's unclear whether his retweet was more than a vague threat, but Trump has fired several government officials over the past few weeks.

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President Donald Trump on Sunday retweeted a call to fire Dr. Anthony Fauci, the US government's top infectious-disease expert who has so far lasted six presidential administrations, to his 76.8 million followers.

The Trump administration has been in damage-control mode over the slow response to dealing with the coronavirus outbreak. Fauci, who has been the director of the National Institute of Allergy and Infectious Diseases since 1984, helping to tackle AIDS, Zika, and Ebola outbreaks, is one of the top experts on the White House's coronavirus task force.

The tweet, written by DeAnna Lorraine, a Republican who ran for Congress in California, said: "Fauci is now saying that had Trump listened to the medical experts earlier he could've saved more lives. Fauci was telling people on February 29th that there was nothing to worry about and it posed no threat to the US public at large. Time to #FireFauci."

It's been about two months since the US's first coronavirus case was reported. According to data from Johns Hopkins University, as of Sunday night more than 22,000 people had died from the virus in the US and more than 555,300 had been infected.

Read more: Tests that can tell if you're immune to the coronavirus are on the way. Here are the companies racing to bring them to the US healthcare system.

A week ago, during a White House briefing, Trump stopped Fauci from telling reporters what he thought about using hydroxychloroquine, a antimalaria drug, for people with COVID-19, the illness caused by the virus. Trump has been vocal about his support for the drug — though it is not approved for treating COVID-19 — repeatedly saying, "What do you have to lose?"

It's unclear whether Trump's retweet was more than a vague threat, but he has fired several government officials in the past few weeks.

Five days ago, he got rid of Glenn Fine, the acting inspector general at the Department of Defense, who had been tasked with overseeing the implementation of the $2 trillion coronavirus stimulus package. On April 3, he fired Michael Atkinson, the intelligence community inspector general who alerted Congress about the whistleblower complaint that accused Trump of soliciting election interference from Ukraine.

Fauci had spoken to CNN earlier on Sunday, and he was quoted in a New York Times report on Saturday that outlined recommendations he backed on February 21.

The Times reported that — in stark contrast to Lorraine's tweet — Fauci, along with the Trump administration's other top public-health experts, said on February 21 that the administration needed to announce aggressive social-distancing policies, even at the cost of disrupting normal life and the US economy.

On Sunday, Fauci said on CNN's "State of the Union" that "no one is going to deny" that lives could have been saved if the US had implemented containment measures earlier in the novel coronavirus outbreak.

Fauci suggested that fewer people would have died if the Trump administration had announced isolation measures in February instead of in mid-March after warnings from public-health officials.

"As I've said many times, we look at it from a pure health standpoint," he said. "We make a recommendation. Often, the recommendation is taken. Sometimes it's not. But it is what it is. We are where we are right now."