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Finally, for those who'd like to see a longer version of this piece, see my Substack where @jvipondmd.bsky.social joins us for the detail: trishgreenhalgh.substack.com/p/respirator...
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An open letter to the World Health Organization on 11th May 2026 by Don Milton, Trisha Greenhalgh, David Fisman, Amanda Kvalsvig, Lidia Morawska, Joe Vipond and Jonathan Samet
Respiratory protection and the precautionary principle in the current Andes virus outbreak
Trish Greenhalgh