Ronna L. Chan

Varicella Zoster Virus Infection Leading to Concomitant Pneumonia and Myocarditis in a Young Immunocompromised Patient

Chris K. Fuller, Ronna L. Chan, Mukesh C. Patel

Abstract IntroductionThe varicella zoster virus (VZV) is typically the cause of chickenpox in children and shingles in adults but is rarely the etiology of acute disease processes. However, while very uncommon and seen in less than 1% of infections, the immunocompromised population …

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Identifying possible inaccuracy in reported birth head circumference measurements among infants in the US Zika Pregnancy and Infant Registry

Nicole M. Roth, Kate Russell Woodworth, Shana Godfred‐Cato, Augustina M. Delaney et autres

BACKGROUND: The US Zika Pregnancy and Infant Registry (USZPIR) monitors infants born to mothers with confirmed or possible Zika virus infection during pregnancy. The surveillance case definition for Zika-associated birth defects includes microcephaly based on head circumference (HC). METHODS: We assessed birth …

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Identifying possible inaccuracy in reported birth head circumference measurements among infants in the US Zika Pregnancy and Infant Registry

Nicole M. Roth, Kate Russell Woodworth, Shana Godfred‐Cato, Augustina M. Delaney et autres

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Maternal Influences on Nausea and Vomiting in Early Pregnancy

Herbert B. Peterson, Amy H. Herring, David A. Savitz, Andrew F. Olshan et autres

Symptoms of nausea and vomiting in early pregnancy (NVP) are common among pregnant women, but whether some women are more likely than others to experience these symptoms has not been well established. We examined potential risk factors for NVP symptom severity, timing …

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Preliminary examination of polymorphisms of GSTM1, GSTT1, and GSTZ1 in relation to semen quality

Amy H. Herring, Patricia V. Basta, Sally D. Perreault, Andrew F. Olshan et autres

Environmental, lifestyle, and occupational exposures on semen quality have been investigated in epidemiological studies with inconsistent results. Genetic factors involved in toxicant activation and detoxification have been examined in relation to the risk of outcomes such as cancer, cardiovascular, and neurologic disorders. …

Indoor Air Pollutants and Health in the United Arab Emirates

Ronna L. Chan, Jacqueline MacDonald Gibson, Maamoon M. Kassab, Fatma Al‐Maskari et autres

Background: Comprehensive global data on the health effects of indoor air pollutants are lacking. There are few large population-based multi–air pollutant health assessments. Further, little is known about indoor air health risks in the Middle East, especially in countries undergoing rapid economic …

Comparison of Trihalomethanes in Tap Water and Blood: A Case Study in the United States

Zorimar Rivera‐Núñez, Philip C. Singer, David A. Savitz, Elizabeth A. Jones et autres

Background: Epidemiological studies have used various measures to characterize trihalomethane (THM) exposures, but the relationship of these indicators to exposure biomarkers remains unclear.

The Healthy Men Study: An Evaluation of Exposure to Disinfection By-Products in Tap Water and Sperm Quality

Amy H. Herring, Ronna L. Chan, Howard S. Weinberg, David A. Savitz et autres

BackgroundChlorination of drinking water generates disinfection by-products (DBPs), which have been shown to disrupt spermatogenesis in rodents at high doses, suggesting that DBPs could pose a reproductive risk to men. In this study we assessed DBP exposure and testicular toxicity, as evidenced …

Conducting Environmental Health Research in the Arabian Middle East: Lessons Learned and Opportunities

Fatma Al‐Maskari, Shu Wen Ng, Alan Campbell, Christopher A. Davidson et autres

Background: The Arabian Gulf nations are undergoing rapid economic development, leading to major shifts in both the traditional lifestyle and the environment. Although the pace of change is brisk, there is a dearth of environmental health research in this region.

Biochemical Markers of Spontaneous Preterm Birth in Asymptomatic Women

Ronna L. Chan

Preterm birth is a delivery that occurs at less than 37 completed weeks of gestation and it is associated with perinatal morbidity and mortality. Spontaneous preterm birth accounts for up to 75% of all preterm births. A number of maternal or fetal …

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Health resource utilization of labor induction versus expectant management

William A. Grobman, Grecio J. Sandoval, Uma Maheswara Reddy, Alan Tita et autres

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Maternal health exposures and pregnancy outcome: examining symptoms of nausea and vomiting in early pregnancy, maternal caffeine consumption, and spontaneous abortion utilizing regression and propensity score methodologies

Ronna L. Chan

This dissertation addressed two important issues concerning pregnant women: caffeine consumption and nausea and vomiting in early pregnancy (NVP). Factors influencing NVP have not been well established and methodological limitations in previous research merit closer evaluation on the caffeine consumption-spontaneous abortion (SAB) …

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