FILE PHOTO: A sign advertises coronavirus disease (COVID-19) testing ahead of the Thanksgiving holiday at Logan International Airport in Boston, Massachusetts, U.S., November 22, 2021. REUTERS/Brian Snyder
FILE PHOTO: A sign advertises coronavirus disease (COVID-19) testing ahead of the Thanksgiving holiday at Logan International Airport in Boston, Massachusetts, U.S., November 22, 2021. REUTERS/Brian Snyder