id author title date pages extension mime words sentences flesch summary cache txt cord-285406-mlpqvshk Van Praet, Jens T. Prevention of nosocomial COVID-19: Another challenge of the pandemic 2020-04-23 .txt text/plain 679 41 50 2 The duration of infectivity is uncertain, with one study reporting that 90% of mild cases had a negative real-time polymerase chain reaction (PCR) test by day 10. Because the hospitalization duration of these patients clearly exceeded the minimal incubation period, these infections were considered nosocomially acquired, transmitted by healthcare workers or external visitors. First, from the beginning of week 12, we screened all healthcare personnel with direct patient contact for cases of low-grade fever (>37.4°C) and acute developing or worsening respiratory symptoms and tested possible cases using nasopharyngeal swabs and real-time PCR. In these same weeks, the screening positivity rates of symptomatic healthcare workers in our hospital were 8.6% (6 out of 70), 31% (17 out of 54), 39% (16 out of 41) and 28% (16 out of 57), respectively and the numbers of patients diagnosed with probable nosocomial COVID-19 were 0, 4, 4, and 23, respectively. Of 31 probable nosocomial COVID-19 infections, 22 (71%) were observed at geriatric wards. ./cache/cord-285406-mlpqvshk.txt ./txt/cord-285406-mlpqvshk.txt