Elevated Bedroom Allergen Exposure (image) NIH/National Institute of Environmental Health Sciences Share Print E-Mail Caption Factors contributing to elevated bedroom allergen levels include presence of pets and pests, type of housing, and living in rural areas. Individual allergens vary by geographic area. Credit NIEHS Usage Restrictions For use in promoting this press release only Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.