Key insight from @Brief_19’s analysis of @TheLancet study of Denmark: Natural immunity, especially for older people, can’t be relied on. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)00575-4/fulltext …
“Past #covid19 infection does not fully protect against future infection; vaccines required.” https://mailchi.mp/4d1f4a95051e/your-daily-roundup-from-brief19-5928284 …pic.twitter.com/SF8Crxvjod