What question did this study set out to answer?

This research aims to examine the transmission routes of carbapenem-resistant Acinetobacter baumannii in intensive care units.

April 19, 2026International Journal of Infectious Diseases1 citationsOpen Access

From High-Touch Surfaces to Air: A Prospective Genomic Analysis Unveils an Underestimated Transmission Route of Carbapenem-Resistant Acinetobacter baumannii in the ICU

HDHonghui DingTongji Hospital YMYu MiaoTongji Hospital SLSun LingXuzhou Medical College

Key Points

This research aims to examine the transmission routes of carbapenem-resistant Acinetobacter baumannii in intensive care units.
Environmental sampling of surfaces and air in ICU settings
Genomic analysis of isolates to characterize diversity
Longitudinal observation of transmission patterns across buildings
13.08% of sampled sites tested positive for carbapenem-resistant Acinetobacter baumannii
Airborne isolates showed greater genetic diversity
Distinct survival characteristics were observed among airborne isolates
Spatiotemporal transmission confirmed over extended periods and multiple buildings

Abstract

Among the environmental sampling sites tested, 13.08% were positive for CRAB. The airborne isolates were characterized by greater diversity and fundamentally distinct survival kinetics. The isolates were predominantly characterized as ST Pas 2 and ST Oxf 208. Spatiotemporal transmission over an extended period and across different buildings was confirmed.

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