Recent Publications by Tulane Public Health Researchers


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The Department of Environmental Health Sciences
Selected Recent Publications

Researchers	Title	Publication	Abstract
Rabito FA, Iqbal S, Holt E, Grimsley LF, Islam TM, Scott SK.	Prevalence of indoor allergen exposures among New Orleans children with asthma.	J Urban Health. Nov 2007. 84(6): 782-92.	Studies of inner-city asthmatic children have shown significant regional variation in dust allergen exposures. The home environment of asthmatic children in the Gulf South region of the USA has not been characterized. This study describes indoor dust allergen levels in the homes of 86 asthmatic children in New Orleans and explores regional variability in dust allergen exposure. Data were used from baseline home visits of children in the New Orleans Healthy Homes Initiative. Interview, visual observation, and environmental dust sampling data of 86 children between 4 and 17 years of age were analyzed. Seventy-seven percent of households had moderate (>2.0-9.9 microg/g) or high (> or =10.0 microg/g) levels of either Der p 1 or Der f 1 dust mite allergen and 56.6% had moderate (>2.0-8.0 U/g) or high (>8.0 U/g) levels of cockroach allergen (Bla g 1). The prevalence of high (>10 microg/g) levels of dog (Can f 1) allergen was 26.5%, and few households (6.0%) had high cat allergen (Fel d 1) levels (>8.0 microg/g). Households with average humidity levels >50% were three times more likely to have elevated dust mite levels (odds ratio = 3.2; 95% confidence interval = 1.1, 9.3; p = 0.03). Home ownership and education level were inversely associated with cockroach and dust mite allergen levels, respectively. Our findings reinforce the evidence of regional variability in dust allergen exposure levels. Asthmatic children living in the Gulf South are exposed to multiple indoor allergen exposures and live in a highly allergenic environment.
Hites L, Lafreniere A, Wingate M, Anderson A, Ginter P, Santacaterina L, McCormick L.	Expanding the public health emergency preparedness competency set to meet specialized local and evolving national needs: a needs assessment and training approach.	Journal of Public Health Management & Practice. Sept/Oct. 2007. 13(5):497-505.	This article presents an approach to competency development created at the South Central Center for Public Health Preparedness to expand and refine existing competency sets for public health emergency responders. The technique uses course content generated by subject matter experts to validate and expand existing national competency sets. New competencies based on local needs were identified that provide coverage of subject matter appropriate to local public health emergency responders beyond the focus of existing national competency sets.
Rabito FA, Iqbal S, Shorter CF, Osman P, Philips PE, Langlois E, White LE.	The association between demolition activity and children's blood lead levels	Environmental Research. Mar 2007. 103(3):345-51	Urban renewal efforts are a priority for many American cities. As efforts to reconstitute urban centers increase, the demolition of old, deteriorated structures has accelerated. Recent studies have identified demolitions as a potential source of environmental lead exposure. We conducted a study examining the relationship between demolition activity and blood lead levels of children residing in neighborhoods where demolition activity occurred. A retrospective cohort study was conducted in St. Louis City, Missouri. The study period was January 1, 2002 to December 31, 2002. Data were obtained from the Missouri Childhood Lead Poisoning Prevention Program's (CLPPP) lead surveillance system and St. Louis Demolition Permit Database. Children were considered exposed to a demolition if they had a blood lead test within 45 days of any demolition on a census block. Exposure was classified as both a dichotomous (yes/no) and a categorical (none/one/multiple) variable and was analyzed separately. Linear regression models were developed to determine effects of demolitions on blood lead levels. A total of 1196 children 6-72 months of age living in 395 census blocks were included. 314 (26.3%) were exposed and 882 (73.7%) were unexposed to a demolition. In an adjusted model, exposure to multiple demolitions was found to have significant effects on children's blood lead levels (coefficient=0.281; 95% CI=0.069, 0.493; P-value=0.010). Age of the child, race, and age of housing where children resided were also significant predictors. This study suggests that multiple demolitions within a census block may significantly increase children's blood lead levels. The findings may be useful to municipal planners in older cities where demolitions are being used as an urban renewal tool.
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