 interhospital outbreak of burkholderia cepacia complex ventilator associated pneumonia vap caused by contaminated mouthwash in coronavirus disease 2019 covid 19 patients in this article an inter hospital outbreak of burkholderia cepacia complex vap caused by contaminated chlorhexidine based mouthwash in covid 19 patients was investigated the ability of b cepacia complex to remain viable in chlorhexidine appears to result from a combination of efflux pump activity biofilm formation and cell wall impermeability effective surveillance with practical monitoring by a multidisciplinary team and rapid implementation of outbreak control are even more necessary in mixed icus and covid 19 icus the authors suggested that national regulatory authorities establish protocols for the detection of b cepacia complex in chlorhexidine based products ensuring microbiological quality of the finished product in addition to patient safety so that similar outbreaks can be prevented 