(Press-News.org) PITTSBURGH, April 28, 2021 - Asthma exacerbations rose following a catastrophic Christmas Eve fire two years ago that destroyed pollution controls at the Clairton Coke Works--the largest such facility in the nation, a University of Pittsburgh Graduate School of Public Health analysis concludes.
The study, published in the Journal of Allergy and Clinical Immunology, was possible because of a collaboration with the University of Pittsburgh Asthma and Environmental Lung Health Institute at UPMC and the Allegheny County Health Department, with funding from The Heinz Endowments.
"In addition to verifying that people living within a 10-mile radius of the coke works had higher rates of asthma exacerbations and use of albuterol rescue medication than those living outside the radius, we learned that nearly half of the people with asthma closest to the fire were unaware of the pollution problem and, therefore, unable to take steps to avoid exposure," said lead author Brandy Byrwa-Hill, M.S., a Ph.D. student in Pitt Public Health's Department of Environmental and Occupational Health.
The Clairton Coke Works is located in a suburb south of Pittsburgh and produces highly refined coal, or "coke," which is used as fuel in the manufacture of steel. Creating coke results in several air pollutants, which are minimized through the plant's pollution controls. On Dec. 24, 2018, a fire destroyed the pollution controls, and, for 102 days, the plant emitted sulfur dioxide at levels 25 times greater than typical emissions.
Byrwa-Hill and the Pitt Public Health team used the Pitt Asthma Institute Research (AIR) registry to quickly collect information from 39 asthma patients living within 10 miles of the coke works and 44 patients living beyond that radius in the six weeks after the fire.
During the pollution control breach, participants who lived closest to the plant had an 80% increased risk of worsened asthma symptoms compared with those furthest from the plant. The difference normalized after the plant was repaired.
Despite news reports and alerts from the Allegheny County Health Department urging people with certain health conditions to take precautions, 44% of the participants were unaware of the excessive pollution.
"When we asked the participants if they would want to know about an environmental disaster, of course they said they would," said senior author James Fabisiak, Ph.D., associate professor of environmental and occupational health and director of the Center of Health Environments and Communities at Pitt Public Health. "Our study reveals that there is a need for a more robust notification system that uses many modes of communication so people can make informed, timely decisions to protect their health."
In addition, the study highlighted the benefit of having a pre-existing registry of well-characterized, geographically identified asthma patients willing to participate in research, said co-senior author Sally Wenzel, M.D., chair of Pitt Public Health's Department of Environmental and Occupational Health.
"I'd encourage any city or county that is home to a significant point source of air pollution to create a similar registry," said Wenzel, who also directs Pitt's Asthma and Environmental Lung Health Institute at UPMC. "People with asthma are particularly sensitive to air pollution, and their experience can be informative to all of us when it comes to maintaining healthy air quality."
INFORMATION:
Albert Presto, Ph.D., associate professor of mechanical engineering at Carnegie Mellon University, was a coauthor of the study.
This research was funded by National Institutes of Health grants P01 AI106684-01A1, R01 AI 145406-01A1, The Heinz Endowments grant E4820 and the Dellenback Funds.
To read this release online or share it, visit https://www.upmc.com/media/news/042821-hill-sw-coke-fire-asthma-jaci.
About the University of Pittsburgh Graduate School of Public Health
The University of Pittsburgh Graduate School of Public Health, founded in 1948 and now one of the top-ranked schools of public health in the United States, conducts research on public health and medical care that improves the lives of millions of people around the world. Pitt Public Health is a leader in devising new methods to prevent and treat cardiovascular diseases, HIV/AIDS, cancer and other important public health problems. For more information about Pitt Public Health, visit the school's Web site at http://www.publichealth.pitt.edu.
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