Publications by authors named "Michael Welton"

Experiencing a hurricane during pregnancy is associated with increased risk of adverse birth outcomes and poor mental health. Pregnant people from marginalized communities are more susceptible to adverse effects, as they have fewer resources to overcome hardships at a time when shelter and nutrition are essential. When Hurricane Maria (HM) devastated Puerto Rico in September 2017, the archipelago was already burdened with high poverty, health disparities, environmental contamination, and fragile utility infrastructure.

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  • * From May 12 to July 13, 2024, 38 states participated in testing, with 11 sites showing high levels of influenza A virus and 24 sites detecting the H5 subtype.
  • * Investigations revealed that many high-level detections corresponded with human influenza activity and identified possible animal sources, providing valuable data for future respiratory illness monitoring.
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Many school nurses experienced increased work burden and stress during the COVID-19 pandemic. This analysis examined data from a Centers for Disease Control and Prevention cross-sectional, nationwide survey of school nurses in March 2022 to examine associations between school nurses' ability to conduct their core responsibilities and selected nurse and school factors among school nurses during the 2021-2022 school year and COVID-19 pandemic. Perceived adequate staffing and financial compensation reduced the odds of reported difficulties across all core school nursing tasks.

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We evaluated gut carriage of extended spectrum beta lactamase producing (ESBL-E) in southeastern U.S. residents without recent in-patient healthcare exposure.

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Objective: Despite widespread availability of COVID-19 vaccines, millions of Americans have not received the recommended vaccine doses. In the District of Columbia (DC), COVID-19 vaccination rates are lowest among residents who are Non-Hispanic (NH) Black and among school-aged children. We assessed COVID-19 vaccine hesitancy among staff and parents of students in DC K-12 public and public charter schools.

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  • This study evaluated the effectiveness of the Test to Stay (TTS) program in reducing COVID-19 transmissions in schools and its impact on in-person learning across four school districts in the U.S. from September to November 2021.
  • Over 370 COVID-19 cases and more than 2,500 close contacts were reported, with TTS participation rates varying significantly between districts, resulting in a range of secondary and tertiary attack risks.
  • The implementation of TTS is linked to saving a substantial number of in-person learning days, but factors such as testing access, communication, and school resources played a crucial role in its success.
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The PROTECT research Center funded by the NIH's National Institute of Environmental Health Sciences (NIEHS) Superfund Research Program was launched in 2010 to explore the impact of exposure to pollutants on the high rate of premature births in Puerto Rico. In September 2017, Hurricanes Irma and María devastated the archipelago, which caused: collapse of the electrical system, collapse of the communication system, limited access to clean water, food, gas, and health services, destruction of public (e.g.

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In the summer of 2020, SARS-CoV-2 infection rates among the U.S. population aged 20-39 years exceeded other age groups, with the largest increases occurring in the southern US.

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Prior to Hurricane Maria, Puerto Rico already had 200+ hazardous waste sites, significant contamination of water resources, and among the highest rates of preterm birth in the US. To address these issues, the Puerto Rico Testsite for Exploring Contamination Threats (PROTECT) Center was formed in 2010 to investigate prenatal environmental exposures, particularly phthalates, and adverse birth outcomes. Recent work from the PROTECT study confirms that in utero exposure to certain phthalates is associated with shorter gestation and increased risk of preterm birth.

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Approximately 41% of adults aged 18-24 years in the United States are enrolled in a college or university (1). Wearing a face mask can reduce transmission of SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19) (2), and many colleges and universities mandate mask use in public locations and outdoors when within six feet of others. Studies based on self-report have described mask use ranging from 69.

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Background: Preterm birth (PTB; gestational age < 37 weeks) is the leading cause of infant morbidity and mortality worldwide. Low and excessive gestational weight gain (GWG) have been previously cited as risk factors for PTB, however the magnitude of association varies across populations. No studies have examined low and excessive GWG as modifiable risk factors for PTB in Puerto Rico, an area with inexplicably high PTB rates.

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Following publication of the original article [1], the author mentioned that two additional NIH staff were involved in the development of the protocol who did not receive recognition in the Acknowledgments section in their published article.

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Puerto Rico was hit by two major hurricanes in September 2017 causing great devastation, losing over 90% of the power grid, wireless communication and access to potable water, and destroying many homes. Our research programs: Puerto Rico Testsite for Exploring Contamination Threats (PROTECT), Center for Research on Early Childhood Exposure and Development in Puerto Rico (CRECE), Zika in Infants and Pregnancy (ZIP), and Environmental Influences on Child Health Outcomes (ECHO) are ongoing observational cohort studies that have been investigating environmental risk factors for perinatal health outcomes among Puerto Rican mothers and infants. Our projects paused operations for about two weeks, to begin recovery process and become a source of assistance, retaining 95% of study participants across all research programs.

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Background: Pregnancy-associated malaria (PAM) has been associated with adverse pregnancy outcomes like preterm birth (PTB) and low birthweight (LBW), which are among the leading causes of infant mortality globally. Rates of PTB and LBW are high in countries with a high burden of malaria. PAM may be a contributing factor to PTB and LBW, but is not well understood.

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Background: Until recently, Zika virus (ZIKV) infections were considered mild and self-limiting. Since 2015, they have been associated with an increase in microcephaly and other birth defects in newborns. While this association has been observed in case reports and epidemiological studies, the nature and extent of the relationship between ZIKV and adverse pregnancy and pediatric health outcomes is not well understood.

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This article presents an overview of our research team's disaster response to the massive destruction of Hurricanes, Irma and Maria, in September 2017, in light of the 120-year colonial legacy and long-term, widespread environmental contamination in Puerto Rico. Both local and federal governmental responses have been extremely inadequate, especially in light of the long-standing issues of environmental contamination throughout the island. Community organizations in Puerto Rico have been fighting for environmental justice for decades, often succeeding, and always confronting government unwillingness to address environmental protection.

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Objectives We examined the association between prepregnancy body mass index (PP-BMI) and preterm birth (PTB) among women in Puerto Rico (PR) as a potentially modifiable risk factor. Methods We conducted a retrospective study using the birth certificate data files from 2005 to 2012 developed by the PR Department of Health to examine the relationship between PP-BMI and PTB. Logistic regression was used to determine crude and adjusted odds ratios (OR) and 95% confidence intervals (CI) for the categories of PP-BMI of overweight (25-29.

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The presence of antibodies to Zika virus (ZIKV) and dengue virus (DENV) can be detected in blood donations. Donation-based surveillance provides an alternative strategy to estimate population prevalence by detecting antibodies that are circulating. To estimate population prevalence, we conducted a systematic review of literature on the seroprevalence of ZIKV and DENV antibodies in blood donations.

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Background: Safety climate involves worker perception about the relative importance where they work and safety climate and has been shown to be a reliable predictor of safety-related outcomes.

Methods: The primary objective of this study is to investigate ethnic differences in perceived safety climate among construction workers. Surveys (n = 179) that included a 10-item safety climate scale were administered in Athens, Georgia (GA), at local construction sites and home improvement stores during June-August, 2015.

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Background: Lead exposure from lead-glazed ceramics (LGCs) and traditional folk remedies have been identified as significant sources of elevated blood lead levels in Mexico and the United States. This study took place from 2005 to 2012 in a rural community in Baja California, Mexico.

Objectives: 1) Investigate the knowledge, attitudes, and practices related to lead and lead exposures from LGCs and two lead-based folk remedies ( azarcon and greta); and 2) evaluate a pilot intervention to provide alternative lead-safe cookware.

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Understanding the geographic distribution of pancreatic cancer is important in assessing disease burden and identifying high-risk populations. This study examined the geographic trends of pancreatic cancer incidence, mortality, and mortality-to-incidence ratios (MIRs) in Georgia, with a special focus on racial disparities of disease. Directly age-adjusted pancreatic cancer incidence and mortality rates for Georgia counties (N = 159) were obtained for 2000-2011.

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Background: Georgia has prostate cancer incidence rates consistently above the national average. A notable portion of Georgia's economy is rooted in agricultural production, and agricultural practices have been associated with an increased risk of prostate cancer.

Methods: Statistical analyses considered county age-adjusted prostate cancer incidence rates as the outcome of interest and three agricultural variables (farmland as percent of county land, dollars spent per county acre on agriculture chemicals, and dollars spent per county acre on commercial fertilizers) as exposures of interest.

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