“…Low socioeconomic status is associated with poor housing, and multiple logistic regression in one study showed that socioeconomic status is a stronger predictive factor for the frequency of visits to health centres. 4,12 Poor housing quality and overcrowding may be associated with, and a proxy for, more specific factors for exposure, susceptibility or resistance to infection; for example, adequacy and type of nutrition (including breastfeeding), behaviour resulting in exposure to infectious agents (e.g., within child care settings) and exposure to environmental contaminants (including tobacco smoke).…”