Examination of the association between housing conditions and pulmonary tuberculosis in Glasgow.

It has been generally accepted that there is some association between unsatisfactory housing conditions and pulmonary tuberculosis. Lack of sunlight and deficient ventilation, often aggravated by overcrowding, may lower resistance, and overcrowding in the presence of an infectious case increases the risk of massive infection. High population density also favours the spread of infection. Yet the exact role played by poor housing in the incidence of pulmonary tuberculosis has been a matter of much speculation.