Xiangheng Liu, 69, (L) of San Jose prepares to receive a COVID-19 vaccination on the opening day of a mass COVID-19 vaccination site at Levi's Stadium on February 09, 2021 in Santa Clara, California. (Photo by Justin Sullivan/Getty Images) The NFL announced Wednesday that more than 2 million COVID-19 vaccinations have been administered at its stadiums and facilities since starting the campaign earlier this year.The league’s effort came after NFL Commissioner Roger Goodell sent a letter to President Joe Biden in February.