The most likely reason for the letter IMO is simpl
Post# of 85528
https://www.cdc.gov/nchs/pressroom/nchs_press...211117.htm
https://www.ama-assn.org/system/files/issue-b...erdose.pdf
https://www.usnews.com/news/health-news/artic...first-time
https://www.forbes.com/sites/brucelee/2021/11...sing-news/