Studies on the Determination of Air-borne Particles in Room Air (VIII) : Houry Variations of Air-borne Dusts and Bacteria

The Destruction of Air-Borne Bacteria

The Lethal Effect of Relative Humidity on Air-borne Bacteria

The viability of pneumococcus, Type I, sprayed into the atmosphere from a liquid suspension was measured as a function of the relative humidity. When broth, saliva, or 0.5 per cent saline solution is employed as the suspending medium, a very high mortality rate is observed at relative humidities in the vicinity of 50 per cent. However, at humidities above or below this value the microorganisms ...

Air-Borne Infection

Quantitative Air-borne Tuberculosis in the Rabbit

1. Pulmonary tuberculosis in unselected rabbits, induced by primary quantitative air-borne infection with human type tubercle bacilli, may retrogress or progress. Some animals whose disease was in a stationary condition might have fallen into one of the above groups had the experiments been prolonged. 2. Within the limits of the observations natural resistance or susceptibility appears to be th...

Air-Borne Fungi in New Haven, Connecticut *

The number and variety of the common fungi in the air vary as the result of a great many factors. Their tendency to contaminate cultures (particularly of skin scrapings) as well as their allergenic properties confer upon them a certain degree of importance.2' 3 The present studies were designed to familiarize us with the common fungi that might contaminate our cultures of skin scrapings from pa...