Washington: Researchers have found new evidence that exposure to three types of mold during infancy may have a direct link to asthma development during childhood.These forms of mould—Aspergillus ochraceus, Aspergillus unguis and Penicillium variabile—are typically found growing in water-damaged homes, putting a spotlight on the importance of mold remediation for public health.Lead author Tiina Reponen, Ph D, and colleagues report these findings in the August 2012 issue of the Journal of Allergy and Clinical Immunology, the official scientific publication of the American Academy of Allergy, Asthma and Immunology. In a long-term population study of nearly 300 infants, researchers from the University of Cincinnati (UC), U.S. Environmental Protection Agency (EPA) and Cincinnati Children’s Hospital Medical Center assessed allergy development and the respiratory health of children annually for the first four years of life then again at age 7—an early age for objective diagnosis of asthma in children.The team also monitored home allergens and mould. All infants enrolled in the study were born to at least one parent with allergies.They found that 25 percent of children whose parents had allergies were asthmatic by age 7. Among the multiple indoor contaminants assessed, only mould exposure during infancy emerged as a risk factor for asthma at age 7. “Previous scientific studies have linked mould to worsening asthma symptoms, but the relevant mold species and their concentrations were unknown, making it difficult for public health officials to develop tools to effectively address the underlying source of the problem,” explains Reponen, who is a professor in the UC College of Medicine’s environmental health department.
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