Extended Data Fig. 1: Cough Aerosol Sampling System (CASS) used to measure culturable M. tuberculosis in cough aerosol droplets as a surrogate for infectiousness. | Nature Medicine

Extended Data Fig. 1: Cough Aerosol Sampling System (CASS) used to measure culturable M. tuberculosis in cough aerosol droplets as a surrogate for infectiousness.

From: Comparison of two diagnostic intervention packages for community-based active case finding for tuberculosis: an open-label randomized controlled trial

Extended Data Fig. 1

The CASS system consisting of a six-stage Anderson cascade impactor (ACI) showing the median expected droplet diameter (µm) for each stage (Panel A).Patient sitting in a negative pressure cubical while coughing into a mouth piece that is attached to the ACI (Panel B).Culture plate that enables CFUs from individual aerosol droplets to be isolated (Panel C) The ACI was horizontally contained in a 10 litre autoclavable chamber (panel D).

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