There is no conceivable reason WHO would sit on information. No interest of ours is served by doing so,” he said. “Our interest is in sounding the alarm when the evidence is indicates the alarm should be sounded and that is exactly what Dr. Tedros did.”

WHO Director-General Tedros Adhanom Ghebreyesus has said the agency is looking into the contents of Trump's letter. Simonson acknowledged he wouldn’t make conclusions on China’s transparency until an independent review by the World Health Organization occurs.