 serratia marcescens outbreak in a covid 19 intensive care unit are there any factors specific to covid 19 units that facilitate bacterial cross contamination between covid 19 patients this article discusses covid 19 dedicated units that were created early in the pandemic despite their need factors specific to these units can possibly increase the risk of bacterial cross contamination between covid 19 patients we report a serratia marcescens outbreak in a covid 19 intensive care unit later discussing factors specific to covid 19 units that may facilitate bacterial cross contamination in such units and raising awareness for such an issue 