Speaking on CNN this Friday, professor of tropical medicine, Dr. Peter Hotez, pushed back on President Trump's claim that every American will have access to a coronavirus vaccine by April.

According to Hotez, there's "just too many unknowns right now" for Trump or any other administration official "to make such a statement.

Even if the vaccines currently in development work, "we don't have the details on the distribution," he added.

"There's going to be a lot of unknown questions," he continued. "We have to really take it in stages."

Watch the video below:

Emails obtained by The New York Times detail how Trump administration political appointees sought to silence the Centers for Disease Control during the coronavirus pandemic.

"On June 30, as the coronavirus was cresting toward its summer peak, Dr. Paul Alexander, a new science adviser at the Department of Health and Human Services, composed a scathing two-page critique of an interview given by a revered scientist at the Centers for Disease Control and Prevention," the newspaper reported. "Dr. Anne Schuchat, a 32-year veteran of the C.D.C. and its principal deputy director, had appealed to Americans to wear masks and warned, 'We have way too much virus across the country.' But Dr. Alexander, a part-time assistant professor of health research methods, appeared sure he understood the coronavirus better."