The Transportation Security Administration screened 1,284,599 people in airports nationwide on Sunday.
That is the most since the COVID-19 pandemic's start, says Business Insider.
Sunday was also the sixth day in the last 10 that the TSA screened more than 1 million travelers.
More than 63,000 Americans died of COVID-19 in December.
December 2020 is now the deadliest month of the pandemic.
Anthony Fauci said the pandemic will most likely get worse over the next few weeks due to high holiday travel.
