- 7 Covid Mysteries Scientists Are Starting to Unravel The New York Times
- Four years on, the COVID-19 pandemic has a long tail of grief Science News Magazine
- COVID-19 timeline: How the deadly virus and the world’s response have evolved over 4 years ABC News
- COVID 4 years later: Deaths down, restrictions eased for weary public, but risks remain Newsday
- COVID-19 pandemic fourth anniversary: How March 11 changed the world Axios