“Mr. President, I actually covered that,” he said, recounting his experience with SARS and what he was learning now from his sources—most shockingly, that more than half of the spread of the disease was by asymptomatic carriers. China had already curbed travel within the country, but every day thousands of people were traveling from China to the U.S.—half a million in January alone. “Should we shut down travel?” the president asked. “Yes,” Pottinger said unequivocally.
