Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said Friday that "more needs to be done" to make coronavirus testing widely available across the United States, even as the Trump administration ramps up its efforts to check Americans for exposure to the illness.

"Clearly, more needs to be done, but we are rapidly getting to the point where we will have many, many tests out there available for virtually everyone," Fauci said in an interview on NBC's "Today" show.

The remarks from the nation's top infectious disease expert represent an improvement in his assessment of the administration's testing system, which he characterized during congressional testimony last week as a "failing."

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