Omicron (BA.1) SARS-CoV-2 variant is associated with reduced risk of hospitalization and length of stay compared with Delta (B.1.617.2) – medRxiv   Commentary on Twitter In Portugal, Omicron hospitalizations were 75% reduced compared with Delta, risk adjusted. Vaccination reduced hospitalizations 84%, w/a booster 93%https://t.co/MvkfuF3mzx pic.twitter.com/zyk2INWNis — Eric Topol (@EricTopol) January 23, 2022  

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