Tony Heller has been looking around the CDC website, and it appears that COVID-19 has retroactively cured tens of thousands of influenza deaths.

PHOTO CREDIT: By National Institutes of Health; originally uploaded to en.wikipedia by TimVickers (25 October 2006), transferred to Commons by Quadell using CommonsHelper. – California Department of Health Services, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6424584