Environmental Health Perspectives
Laura Perez, Fred Lurmann, John Wilson, Manuel Pastor, Sylvia J. Brandt, Nino Künzli, and Rob McConnell
Please note: reports dated earlier than June 2020 were published under our previous names: the USC Program for Environmental and Regional Equity (PERE) or the USC Center for the Study of Immigrant Integration (CSII).
Research conducted at the University of Southern California Keck School of Medicine, Spatial Sciences Institute, and Program for Environmental and Regional Equity indicates that at least 8 percent of the more than 300,000 cases of childhood asthma in Los Angeles County can be attributed to traffic-related pollution at homes within 75 meters (a little less than 250 feet) of a busy roadway.
The study also indicates that previous estimates of childhood asthma exacerbation related to air pollution may have underestimated the true burden of exposure on society. The research was published online Sept. 24, 2012 in Environmental Health Perspectives and was conducted in collaboration with the Swiss Tropical and Public Health Institute and Sonoma Technology, Inc. The study focused on the Los Angeles basin.
“Our findings suggest that there are large and previously unappreciated public health consequences of air pollution in Los Angeles County and probably other metropolitan areas with large numbers of children living near major traffic corridors,” said Rob McConnell, professor of preventive medicine, Keck School of Medicine of USC.
The USC study also looked at new state of California policies intended to cut back on vehicular greenhouse gas emissions that cause climate change. An important goal of these policies is to reduce vehicular emissions of greenhouse gases, both by improving fuel efficiency and reducing vehicle miles traveled by increasing use of public transportation. As part of these policies, housing developers would be offered incentives, such as speeding up environmental review to design projects located closer to transit stops with bus or rail service that will encourage use of fuel efficient mass transit. The investigators note, however, that transit stops are often located on or near busy roads and that there has been little study of the impact of these policies on exposure to children living near major roadways.
The study concludes that better information is needed to develop the optimal mix of policies that reduce sprawl, encourage walking and use of mass transit to reduce vehicle miles traveled, greenhouse gases and regional air pollution, and also to reduce children’s near-roadway exposure to emissions from vehicles still traveling on roadways.
“Plans to reduce greenhouse gas emissions and combat climate change offer an opportunity to develop ‘win-win’ strategies that will maximize the health benefits from reduction both of greenhouse gases and of air pollutants that directly harm children,” McConnell said.
“There is also emerging evidence that other diseases may be caused or exacerbated by urban air pollution, including atherosclerosis, lung cancer, chronic obstructive pulmonary disease (COPD) and neurological disorders,” McConnell added. “Thus, policies to combat climate change may have near-term health benefits beyond reducing the burden of disease due to asthma.”
The researchers estimated the effects of air pollution on children suffering from asthma by using data from sources including the Children’s Health Study, a long-term study of effects of air pollution ongoing since 1993. Regional air pollution measurements from the U.S. Environmental Protection Agency and area maps were used to estimate exposure to near-roadway pollution in the Los Angeles area. This information was linked to population data.
Asthma exacerbation in this study was connected to regional pollutants including nitrogen dioxide and ozone that cover large parts of the air basin, and to near-roadway pollutants that are responsible for the development of asthma. The researchers found that living near busy roads contributed disproportionately to the more serious exacerbations of asthma in children, including emergency room visits and hospitalizations.
In addition, a 20 percent reduction in children’s near-roadway pollution exposure would result in an estimated 5,900 fewer cases of childhood asthma in the County, according to the research, whereas a 20 percent increase in exposure would result in 5,900 more cases of asthma.
Funding for the research was provided by funds from British Petroleum (BP) as part of an air quality violations settlement agreement with the South Coast Air Quality Management District, a California state agency. The study also was supported by National Institute of Health grants #P30ES007048, P01ES009581, P01ES011627 and R01 ES016535, as well as grants from the Environmental Protection Agency, and support from the Hastings Foundation.
Perez, L., Lurmann, F., Wilson, J., Pastor, M., Brandt, S.J., Künzli, N., McConnell, R. (2012). Near-roadway pollution and childhood asthma: Implications for developing “win-win” compact urban development and clean vehicle strategies, Environmental Health Perspectives, Published online Sept. 24, 2012; doi: http://dx.doi.org/10.1289/ehp.1104785
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Immigrant Integration & Racial Justice
Our work on immigrant integration and racial justice brings together three emphases: scholarship that draws on academic theory and rigorous research, data that provides information structured to highlight the process of immigrant integration over time, and engagement that seeks to create new dialogues with government, community organizers, business and civic leaders, immigrants and the voting public to advance immigrant integration and racial equity.
Economic Inclusion & Climate Equity
In the area of economic inclusion, we at ERI advance academic theory and practical applications linking economic growth, environmental quality, and civic health with bridging of racial and other gaps; produce accessible and actionable data and analysis through the data tools; and establish research partnerships to deepen and advance the dialogue, planning, and actions around racial equity, environmental justice, and the built environment.
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ERI’s work in the area of governing power includes: conducting cross-disciplinary studies of today’s social movements, supporting learning and strategizing efforts to advance dialogues among organizers, funders, intermediaries, evaluators, and academics, and developing research-based social change frameworks and tools to inform—and be informed by—real-world, real-time efforts towards a vision of deep change.
In 2020, the USC Program for Environmental and Regional Equity (PERE) and the USC Center for the Study of Immigrant Integration (CSII) merged to form the USC Equity Research Institute (ERI).
The full list of publications published under our previous and current names can be found in our publications directory.