Lung virome convergence precedes hospital-acquired pneumonia in intubated critically ill patients.

ABSTRACT: Hospital-acquired pneumonia (HAP) is one of the most common nosocomial infections, leading to significant morbidity and mortality in critically ill patients. HAP is previously associated with dysbiosis of the microbiota. However, the composition of the lung virome and its role in HAP pathogenesis remain unclear. Here, we longitudinally analyze the endotracheal virome in 87 critically ill patients, including 48 with HAP. Within the virome dominated by Caudoviricetes, a decrease in viral beta-diversity toward a bacteriophage-dominated signature and a distinct viral-bacterial interactome is observed 5-4 days before HAP onset. Lung virome composition, viral convergence before HAP onset, and conservation of 18% of the bacteriophage signature are validated in an external cohort of 40 patients. I

SUBMITTER: Anani H 

PROVIDER: S-EPMC12490257 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature