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The purpose of this work was to identify risk factors associated with need for invasive mechanical ventilation (IMV), to analyse viral kinetics in patients with and without IMV and to provide a comprehensive description of clinical course.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>A cohort of 168 hospitalised adult COVID-19 patients enrolled in a prospective observational study at a large European tertiary care centre was analysed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Forty-four per cent (71\/161) of patients required invasive mechanical ventilation (IMV). Shorter duration of symptoms before admission (aOR 1.22 per day less, 95% CI 1.10\u20131.37, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01) and history of hypertension (aOR 5.55, 95% CI 2.00\u201316.82, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01) were associated with need for IMV. Patients on IMV had higher maximal concentrations, slower decline rates, and longer shedding of SARS-CoV-2 than non-IMV patients (33\u00a0days, IQR 26\u201346.75, vs 18\u00a0days, IQR 16\u201346.75, respectively, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). Median duration of hospitalisation was 9\u00a0days (IQR 6\u201315.5) for non-IMV and 49.5\u00a0days (IQR 36.8\u201382.5) for IMV patients.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Our results indicate a short duration of symptoms before admission as a risk factor for severe disease that merits further investigation and different viral load kinetics in severely affected patients. Median duration of hospitalisation of IMV patients was longer than described for acute respiratory distress syndrome unrelated to COVID-19.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s15010-021-01594-w","type":"journal-article","created":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T17:02:41Z","timestamp":1619110961000},"page":"703-714","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Clinical and virological characteristics of hospitalised COVID-19 patients in a German tertiary care centre during the first wave of the SARS-CoV-2 pandemic: a prospective observational 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FB reports grants from Einstein Foundation, personal fees from Axon Publishing, grants from Vifor Pharma, personal fees from Elsevier Publishing, grants from Federal Ministry of Health, grants from Berlin Institute of Health, grants from Federal Ministry of Education and Research, outside the submitted work.TCJ is in part funded through NIAID-NIH CEIRS contract HHSN272201400008C. MW reports grants from Deutsche Forschungsgemeinschaft, grants from Bundesministerium f\u00fcr Bildung und Forschung, grants from Deutsche Gesellschaft f\u00fcr Pneumologie, grants from European Respiratory Society, grants from Marie Curie Foundation, grants from Else Kr\u00f6ner Fresenius Stiftung, grants from Capnetz Stiftung, International Max Planck Research School, grants and personal fees from Actelion, grants and personal fees from Bayer Health Care, grants and personal fees from Biotest, grants and personal fees from Boehringer Ingelheim, grants and personal fees from Noxxon, grants and personal fees from Pantherna, grants from Quark Pharma, grants and personal fees from Silence Therapeutics, grants from Takeda Pharma, grants and personal fees from Vaxxilon, personal fees from Aptarion, personal fees from Astra Zeneca, personal fees from Berlin Chemie, personal fees from Chiesi, personal fees from Glaxo Smith Kline, personal fees from Novartis, personal fees from Sinoxa, personal fees from Teva, outside the submitted work.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest statement"}},{"value":"Approval was obtained from the ethics committee of Charit\u00e9 Universit\u00e4tsmedizin Berlin. 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