Ventilator-Associated Pneumonia by Weeksella virosa

Background: Weeksella virosa pneumonia has been described as a healthcare-associated infection. This is a rare gram-negative anaerobic bacterium associated with the use of mechanical ventilation for a long period of time and is more frequent in immunosuppressed patients. This is the first case reported in the state of Veracruz and the second in Mexico; postpandemic, it is important to identify the presence of infectious agents that are uncommon in the different hospital pathologies. Case presentation We present the case of a 64-year-old female from Veracruz, Mexico who developed an infectious process in the right pelvic limb after a transcatheter aortic valve replacement procedure and subsequently developed sudden cardiorespiratory arrest requiring mechanical ventilation, with subsequent imaging studies demonstrating a pneumonic process associated with a nosocomial infection. Conclusions: We should keep in mind that the high-risk population for W. virosa infection is mainly adults with multiple comorbidities or immunosuppressed and that it is necessary to consider that nosocomial infections may present unusual etiologic agents probably because of changes in patient management during the COVID-19 pandemic.