The size distribution of airborne particles carrying micro-organisms

Abstract

Values are given for the median equivalent diameters and for the inter-quartile range, of airborne particles carrying a variety of micro-organisms. Organisms associated with human disease or carriage were usually found on particles in the range 4–20 μ equivalent diameter. Many fungi appeared to be present in the air as single spores. We should like to acknowledge the collaboration of Dr Yvonne M. Clayton in the collection and examination of the fungal samples.