WASHINGTON – A senior aide to President Donald Trump is publicly pushing back against National Institute of Allergy and Infectious Diseases director Anthony Fauci's assertion that it's unclear whether an anti-malaria drug can be used to combat coronavirus.

Peter Navarro, the top trade and manufacturing aide to the president who is coordinating the use of the Defense Production Act for the White House, told CNN's John Berman Monday that he believes a "second opinion" is needed about hydroxychloroquine as a treatment.

"I let (Fauci) speak for himself, John, but I would have two words for you: second opinion," Navarro said. "Doctors disagree about things all the time."

Coronavirus live updates:US deaths near 10K ahead of 'hardest and saddest week'

Navarro's comments come a day after Axios and the New York Times reported that he and Fauci had a heated argument during a White House coronavirus task force meeting on Saturday about the drug.

According to the reports, Navarro and Fauci sparred over whether there was enough evidence on hydroxychloroquine as a treatment to COVID-19, the novel coronavirus.

Navarro brought in studies from trials overseas that show the drug, which is often used to treat malaria, was working to combat coronavirus, according to the reports. Thus far, many reports have had no control group when testing the drug. One study, from Wuhan, China, where the virus originated from, tested the drug with a control group.

However, Fauci maintained that there is still only anecdotal information and that more rigorous studies need to be done to see the true effect of the drug, according to the reports. Despite the two arguing about the drug as a treatment, the White House coronavirus task force has agreed to surge the supply of hydroxychloroquine to hot zones.

"In terms of the studies that exist, I think you would grant me that there are numerous studies on this which show preliminary therapeutics," Navarro said in the CNN interview. He added that Fauci is not the "only authority" on studies of the drug.

'He's answered that question.':Trump interrupts when reporter asks Fauci about hydroxychloroquine

"If CNN wants to set up Dr. Fauci as the only authority on medicine, and only rely on him, that's one set of facts," Navarro said. "What I'm saying is, doctors disagree all the time."

Trump in the past several days has promoted hydroxychloroquine as a treatment for coronavirus, saying at his Sunday briefing that the drug is “being tested now" and “there are some very strong, powerful signs” of the potential of the drug as a treatment.

However, Fauci has repeatedly said that it's unclear whether drug is working to treat coronavirus.

More:A coronavirus vaccine is being developed in record time. But don't expect that technology to speed up flu vaccines — yet.

“The data are really, just, at best, suggestive,” Fauci told CBS's "Face the Nation" on Sunday. “There have been cases that show there may be an effect and there are others to show there's no effect. So, I think in terms of science, I don't think we could definitively say it works.”

Although Navarro said that a second opinion is needed on the effects the drug, he did note that he trusted Fauci's analysis.

“I agree with the analysis of Dr. Fauci in this sense, we don’t have definitive 100% science to say that (hydroxychloroquine) absolutely works," Navarro said.