Table 10– Degree of exposure
Intensity of exposureDegree of proximity (talking distance) between the contact and the index, if exposure was only outdoors
Concentration of tubercle bacilli in the ambient indoor air, determined by cough intensity and bacillary load in the sputum
The volume of air shared and quality of air circulation and ventilation indoors
Duration of exposureCumulative time of contact during the putative period of infectiousness period
  • The information in this table is taken from 55, 194, 195.