ABSTRACTS MONDAY AUGUST 26 KEYNOTES, SYMPOSIA, ORAL PRESENTATION SESSIONS, POSTER DISCUSSION SESSIONS, THEMATIC POSTER SESSIONS “On Air Table of contents Monday August 26, 9:00 AM – 10:00 AM ............................................................................................... 23 Keynote Lectures .................................................................................................................................. 23 Cities as unequal opportunities for good health ........................................................................................... 23 Challenges and Prospects of Environmental Epidemiology in Africa ............................................................ 24 Monday August 26 10:30 AM – 12:00 PM .............................................................................................. 25 S01: Mapping the Air Pollution Metabolome: Applications, Limitations, and the Path Forward ............... 25 Metabolic perturbations following exposures to traffic-related air pollution in a panel of commuters with and without asthma ...................................................................................................................................... 25 Traffic-Related Air Pollution Exposure and Altered Fatty Acid Oxidation Among Adolescents and Young Adults – the Interplay with Obesity .............................................................................................................. 26 The Maternal Serum Metabolome and Ambient Air Pollution Exposure during Pregnancy ........................ 27 High-resolution metabolomics in human clinical studies of traffic-related pollutants ................................ 28 Changes in the blood metabolome in relation to air pollution exposure: results from the EXPOsOMICS project ........................................................................................................................................................... 29 S03: One Health: On animals, humans and the environment .................................................................. 30 The One Health Approach: Perspectives for Environmental Epidemiology.................................................. 30 Field evaluation of air sampling methods using a one-health approach to assess pathogen contamination in animal operation environments ................................................................................................................ 32 On Places-I: Emerging exposures and health effects in the farm environment ........................................... 33 On Places-II: Emerging Exposures and Health Effects in the Hospital Environment .................................... 34 S05: PFAS Research Reaches its Adolescence: What Have We Learned and Where Are We Going? .......... 35 Perils of biomarkers of exposure vs. external exposure estimates: Lessons from the mid-Ohio Valley on potential for reverse causality and other biases ........................................................................................... 35 Approaches to Integrating the Toxicology and Epidemiology Evidence on PFAS ......................................... 36 PFAS Dose Response Relationships and New Research Strategies ............................................................... 37 Evolution of Research on Health Effects of PFAS and Current Unmet Needs to Inform Public Policy ......... 38 S20: A world less dependent on fossil fuels – scientific evidence and corporate influence. An ISEE Policy Committee Symposium ......................................................................................................................... 39 Introduction to the symposium .................................................................................................................... 39 The Impact of Fossil Fuel Combustion on Global Health .............................................................................. 40 Health impact of China Coal Consumption Cap Project: an analysis of PM2.5 monitoring and morbidity/mortality data in typical cities in China ........................................................................................ 41 The world is unequal: The energy dilemma in LMICs ................................ ................................................... 42 Policies for accelerating progress towards a fossil fuel free economy and improving health...................... 43 OPS 01: Understudied environmental health issues ............................................................................... 44 1 Association of urinary metabolites of organophosphate flame retardants with chronic kidney function markers in the US general population .......................................................................................................... 44 Biomarker-Based Assessment of the Influence of Chemical Exposures on Chronic Kidney Disease ............ 45 Prenatal exposure to perfluoroalkyl substances and child liver injury ......................................................... 46 Tampon use, environmental chemicals and oxidative stress ....................................................................... 47 Accounting for intercourse in the relationship of ambient temperature with fecundability ....................... 48 Health impact of attending school close to the abandoned copper mine of Musoshi, DR Congo ............... 49 OPS 10: Wildfires .................................................................................................................................. 50 Mortality in US In-Center Hemodialysis Patients Following Exposure to Wildfire Smoke PM2.5 ................ 50 Extreme heat episodes, wildfires, and risk of preterm delivery in California, 2005-2013 ............................ 51 Characterizing Impacts of Wildfire Smoke Exposure on Medication Fills and Outpatient Visits for Asthma during the 2015 Wildfire Season in the Western United States ................................................................... 52 Out-of-Hospital Cardiac Arrests and Fine Particulate Matter (PM2.5) during 2015-2017 California Wildfires ....................................................................................................................................................................... 53 Wildfire smoke may interfere with the use of black carbon as an indicator of traffic exposure ................. 54 Development of Land-Use Regression Models for Particulate Matter due to residential wood burning in Temuco, Chile ................................................................................................................................................ 55 OPS 15: Chemicals and pregnancy ......................................................................................................... 56 Risk of congenital anomalies near municipal waste incinerators in England and Scotland: retrospective population-based cohort study ..................................................................................................................... 56 Associations of prenatal urinary phthalates, gestational weight gain, and postpartum weight retention among pregnant women from Mexico City .................................................................................................. 57 Per- and polyfluoroalkyl substances in early pregnancy and risk for preeclampsia ..................................... 58 Associations between urinary parabens exposure in early to mid-pregnancy and gestational diabetes mellitus .......................................................................................................................................................... 59 Parameters of ovarian reserve in relation to urinary concentrations of parabens ...................................... 60 No association between perfluorinated compounds and preeclampsia in the highly exposed population of Ronneby, Sweden .......................................................................................................................................... 61 OPS 25: Drinking water contamination and adult health ........................................................................ 62 Assessment of drinking water safety in the Netherlands using nationwide exposure and mortality data .. 62 Arsenic and disinfection by-products (DBPs) in drinking water in Canada: a population-based study to explore any association with relevant cancers. ............................................................................................ 63 Long-term exposure to widespread drinking water chemicals, blood inflammation markers and colorectal cancer ............................................................................................................................................................ 64 Ulcerative colitis, Crohn’s disease and other inflammatory bowel disease in a population with high exposure to per- and polyfluoroalkyl substances through drinking water ................................................... 65 Half-lives of PFOA, PFPeS, PFHxS, PFHpS and PFOS after end of exposure to contaminated drinking water ....................................................................................................................................................................... 66 Chronic Kidney Disease of undetermined cause (CKDu), an emerging disease in developing nations: a Malawian geographical study with focus on potable water sources ............................................................ 67 2 OPS 45: Cardiometabolic effects of