Fauci, who is on the White House Coronavirus Task Force, told the wildlife magazine that COVID-19 likely originated in an animal and then transmitted to humans. He made similar comments last month during a White House briefing.
"If you look at the evolution of the virus in bats and what's out there now, [the scientific evidence] is very, very strongly leaning toward this could not have been artificially or deliberately manipulated … Everything about the stepwise evolution over time strongly indicates that [this virus] evolved in nature and then jumped species," said Fauci, the director of the U.S. National Institute of Allergy and Infectious Diseases.
When asked if there could have been a scenario where scientists found the virus outside the lab, brought it back and then it escaped, Fauci shut the line of questioning down.
"But that means it was in the wild to begin with. That's why I don't get what they're talking about [and] why I don't spend a lot of time going in on this circular argument," he said.
His remarks come as President Trump has claimed to have seen evidence that the virus began in Wuhan Virology Institute, which conducts research on contagious pathogens. Secretary of State Mike Pompeo over the weekend said there's a "significant amount of evidence" pointing to Mr. Trump's claim, but did not elaborate.