Abstract
The size and density of microbial cells determine the time that pathogens can remain airborne and thus, their potential to infect by the respiratory route. We determined the density and size distribution of Burkholderia pseudomallei cells in comparison with other Burkholderia species, including B. mallei and B. thailandensis, all prepared and analyzed under similar conditions. The observed size distribution and densities of several bacterial strains indicates that aerosolized particles consisting of one or of a few B. pseudomallei cells should be efficiently retained in the lungs, highlighting the risk of transmission of melioidosis by the respiratory route when the pathogen is present in fluids from infected patients or aerosolized from the environment.
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Acknowledgments
The expertise in electron microscopy analysis provided by Ray Meades from the Biomedical Imaging Core Facility, University of Pennsylvania is highly appreciated. We would like to thank Pierre Filion and the Electron Microscopy Unit at PathWest Laboratory Medicine WA for the use of reagents and equipment. We acknowledge the technical assistance provided on BSL-3 operations by Ms. Leslie I. Williams (Edgewood Chemical Biological Center, Maryland). This work was supported by the U.S. Department of Defense Chemical and Biological Defense program administered by the Defense Threat Reduction Agency and by In-House Laboratory Independent Research (ILIR) funds from the Research and Technology Directorate, Edgewood Chemical Biological Center, Research Development and Engineering Command, US Army.
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Communicated by Erko Stackebrandt.
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Sagripanti, JL., Carrera, M., Robertson, J. et al. Size distribution and buoyant density of Burkholderia pseudomallei . Arch Microbiol 193, 69–75 (2011). https://doi.org/10.1007/s00203-010-0649-6
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DOI: https://doi.org/10.1007/s00203-010-0649-6