US travel on the rise as COVID-19 vaccinations ramp up, but medical experts warn pandemic isnât over By Austin Williams CDC director pleads with Americans to stay vigilant amid uptick in travel CDC Director Dr. Rachelle Walensky pleaded with Americans to continue mask-wearing and refrain from nonessential travel as the coronavirus continues to infect more than 50,000 Americans each day. She cited escalating rates of travel, including around college spring break. LOS ANGELES - As vaccination efforts in the U.S. ramp up, many states have begun reopening their economies and preparing for the expected travel boom that is sure to come.