Lung bacterial microbiome of critical COVID-19

The study was aimed to characterize the lower respiratory tract microbiome of COVID-19 critically ill patients and investigate the microbiome diversity in comparison to COVID-19-negative patients. We performed a microbiome analysis on bronchoalveolar lavage (BAL) samples collected between April and May 2020 from 24 COVID-19 critically ill subjects and 24 patients with non-COVID-19 pneumonia.