Respiratory disease in relation to patient residence near to hazardous waste sites.

We have examined rates of hospitalization for respiratory diseases in relation to residences in zip codes with hazardous waste sites, as well as socio-economic status. Chronic bronchitis and chronic airway obstruction were elevated in persons who live in zip codes containing persistent organic pollutants (POPs) (PCBs and persistent pesticides) as compared to "clean" zip codes without hazardous waste sites or zip codes with hazardous waste sites containing other kinds of wastes, but the differences could be due to socio-economic status and behavioral risk factors since these are also important risk factors for respiratory diseases. Therefore, we investigated rates of hospitalization for individuals living in zip codes along the Hudson River, because here the average per capita income is higher than in the rest of the state, and there is less smoking, better diet and more exercise. We found a similar elevation of chronic bronchitis and chronic airway obstruction along the Hudson. These observations are consistent with the possibility that living near a POPs-contaminated site poses a risk of exposure and increased risk of chronic respiratory disease, probably secondary to suppression of the immune system.