Or they could have declared not to be smoking to avoid being triaged into the "no ventilator/no resuscitation" category.
24% of Italians are smokers, but of 441 patients admitted to a hospital in Parma for Covid-19, only 5% were. Possible explanation: Smoking could make the immune system "tolerant of a continuous inflammatory insult."https://www.medrxiv.org/content/10.1101/2020.05.05.20092015v1.full.pdf+html …
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That was the hypothesis when the data about smokers being underrepresented in hospitalizations started coming out of China but it looks to be mirrored in Germany/France/US CDC data
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Have been really curious about this anomaly since coming across this:https://www.qeios.com/read/Z69O8A.13
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I'm Italian and I smoke. But it's obvious. Don't do it only for the virus. Keep your lungs clean.
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Basically no one has a clue yet
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Happy Monday 
Paullove and blessings to you and yours#TwitterFamilyThanks. Twitter will use this to make your timeline better. UndoUndo
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21 Patients were smokers. You’re obviously educated enough not to try to apply statistical and correlation reasoning on such a sample. Treating medical as computer science is very OK.
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It's been observed on larger samples too, in all countries.https://mobile.twitter.com/ndehouche/status/1254092657262903297 …
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Non smokers generally live longer. Long enough to be in the major at risk >80 YO age group....
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It could be that smokers simply die more and earlier of CoVid and thus are underrepresented among the hospitalized. OTOH Nicotine is known to inhibit ACE2, the receptor of the virus. https://mobile.twitter.com/ndehouche/status/1249766111907704833 … This deserves some serious, full-time scrutiny.
"A recent study has confirmed that severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) uses severe acute respiratory syndrome coronavirus (SARS‐CoV) receptor angiotensin‐converting enzyme 2 (ACE2) for host cell entry." https://www.ahajournals.org/doi/10.1161/JAHA.120.016219 …
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