Estimating aerosol transmission risk of SARS-CoV-2 in New York City public schools during reopening.

The objective of this study was to estimate the risk of SARS-CoV-2 transmission among students and teachers in New York City public schools, the largest school system in the US. Classroom measurements conducted from December 2017 to September 2018 were used to estimate risk of SARS-CoV-2 transmission using a modified Wells-Riley equation under a steady-state conditions and varying exposure scenarios (infectious student versus teacher, susceptible student versus teacher, with and without masks). We then used multivariable linear regression with GEE to identify school and classroom factors that impact transmission risk.

Estimated number of N95 respirators needed for healthcare workers in acute-care hospitals during the coronavirus disease 2019 (COVID-19) pandemic.

Objective: Due to shortages of N95 respirators during the coronavirus disease 2019 (COVID-19) pandemic, it is necessary to estimate the number of N95s required for healthcare workers (HCWs) to inform manufacturing targets and resource allocation.

Methods: We developed a model to determine the number of N95 respirators needed for HCWs both in a single acute-care hospital and the United States.

Results: For an acute-care hospital with 400 all-cause monthly admissions, the number of N95 respirators needed to manage COVID-19 patients admitted during a month ranges from 113 (95% interpercentile range [IPR], 50-229) if 0.

Systematic Review and Meta-Analysis of Incidence and Prevalence of Endometriosis.

There is still much controversy regarding the epidemiology of endometriosis. The objective of this work is to conduct a systematic review, and if possible, proceed with a meta-analysis of studies that have analyzed the incidence and prevalence of this condition among women in the general population. The inclusion criteria were papers published after 1997 that had reported data of the incidence or prevalence of endometriosis.

Microbial Contamination Risk and Disinfection of Radiation Protective Garments.

Healthcare-associated infections are a major public health concern for both patients and medical personnel. This has taken on greater urgency during the current COVID-19 pandemic. Radiation Personal Protective Equipment (RPPE) may contribute to risks of microbial contamination.

The effect of exposure to long working hours on alcohol consumption, risky drinking and alcohol use disorder: A systematic review and meta-analysis from the WHO/ILO Joint Estimates of the Work-related Burden of Disease and Injury.

Background: The World Health Organization (WHO) and the International Labour Organization (ILO) are developing Joint Estimates of the work-related burden of disease and injury (WHO/ILO Joint Estimates), with contributions from a large network of experts. Evidence from mechanistic data suggests that exposure to long working hours may increase alcohol consumption and cause alcohol use disorder. In this paper, we present a systematic review and meta-analysis of parameters for estimating the number of deaths and disability-adjusted life years from alcohol consumption and alcohol use disorder that are attributable to exposure to long working hours, for the development of the WHO/ILO Joint Estimates.

Higher and Higher? Drug and Alcohol Use and Misuse among HIV-Vulnerable Men, Trans Men, and Trans Women Who Have Sex with Men in the United States.

Substance use (SU) and misuse are disproportionately more common among sexual and gender minority (SGM) individuals compared to their heterosexual peers. Yet, little is known about regional and demographic differences in use and misuse among SGM. In this study, we investigated regional and demographic differences in SU and misuse in a U.

Individual and Partner Characteristics Associated With Intentions to Use PrEP Among Partnered Men, Trans Men, and Trans Women in Sero-Concordant and -Discordant Relationships in the United States.

Despite proven effectiveness in reducing HIV transmission, pre-exposure prophylaxis (PrEP) use remains low among those who meet the recommended CDC guidance for PrEP use. Data are from a U.S.

PrEP Uptake and Discontinuation Among a U.S. National Sample of Transgender Men and Women.

Pre-exposure prophylaxis (PrEP) has revolutionized HIV prevention efforts by effectively preventing the sexual transmission of HIV infection. Few studies have examined PrEP uptake and discontinuation among transgender individuals who are underserved in HIV prevention efforts. An online U.

Transparency and reproducibility in artificial intelligence.

Breakthroughs in artificial intelligence (AI) hold enormous potential as it can automate complex tasks and go even beyond human performance. In their study, McKinney et al. showed the high potential of AI for breast cancer screening.

Barriers and Enablers to Family Physicians' Provision of Early Pregnancy Loss Management in the United States.

Background: Early pregnancy loss (EPL) is a common experience. Treatment options include expectant management, medication, and uterine aspiration. Although family physicians can offer comprehensive EPL treatment in their office-based settings, few actually do.

Characterization of exhaled breath condensate (EBC) non-exchangeable hydrogen functional types and lung function of wildland firefighters.

Inhalation of smoke is shown to be associated with adverse respiratory outcomes in firefighters. Due to invasiveness of procedures to obtain airways lining fluid, the immediate responses of the target organ (i.e.

Experiences Receiving HIV-Positive Results by Phone: Acceptability and Implications for Clinical and Behavioral Research.

Improving HIV testing rates and increasing early detection among men who have sex with men (MSM) are critical strategies for enhancing overall health and decreasing HIV transmission. Remote testing and phone delivery of HIV test results may reduce barriers such as geographic isolation or HIV-related stigma. In 2018-19, 50 MSM completed qualitative interviews about their experience receiving a positive HIV test result via phone through their participation in a research study that included remote HIV testing.

The Synergistic Effect of an ATP-Competitive Inhibitor of mTOR and Metformin on Pancreatic Tumor Growth.

Background: The mechanistic target of rapamycin complex 1 (mTORC1) is a nutrient-sensing pathway and a key regulator of amino acid and glucose metabolism. Dysregulation of the mTOR pathways is implicated in the pathogenesis of metabolic syndrome, obesity, type 2 diabetes, and pancreatic cancer.

Objectives: We investigated the impact of inhibition of mTORC1/mTORC2 and synergism with metformin on pancreatic tumor growth and metabolomics.

Awareness and Acceptability of Undetectable = Untransmittable Among a U.S. National Sample of HIV-Negative Sexual and Gender Minorities.

While the "Undetectable = Untransmittable" (U=U) message is widely endorsed, little is known about its breadth and reach. Our study describes socio-demographic characteristics and sexual behaviors associated with having heard of and trusting in U =U in a U.S.

Contraceptive Use by Women Across Multiple Components of Sexual Orientation: Findings from the 2011-2017 National Survey of Family Growth.

We estimated sexual orientation-related disparities in contraceptive outcomes among women across multiple components of sexual orientation. Using pooled National Survey of Family Growth data, 2011-2017, we performed multivariable logistic and multinomial regression analyses (adjusted for race/ethnicity, age, education, and income) to estimate the independent associations between multiple components of sexual orientation (sexual identity, behavior, and attraction) and two contraceptive outcomes-any contraceptive use and type of method used at last intercourse with a male partner. Women who reported any attraction to females had increased odds of having used any contraceptive method compared with those only attracted to males (adjusted odds ratio [AOR] 1.

Factors Associated with Being PrEP-Naïve Among a U.S. National Cohort of Former-PrEP and PrEP-Naïve Participants Meeting Objective Criteria for PrEP Care.

There is an urgent need to increase uptake and persistence in HIV pre-exposure prophylaxis (PrEP) in PrEP-eligible candidates. Little is known about the similarities and differences between groups of PrEP-naïve and former users, an important consideration for future interventions. We explored factors associated with being PrEP-naïve in a U.

Applying a social-ecological lens to opinions about HIV self-testing among Kenyan truckers who declined to test: a qualitative study.

HIV prevalence among truckers in Africa is high and testing rates suboptimal. With numerous African countries having approved HIV self-testing kits, more information on how to design acceptable and accessible self-testing programs for high-risk populations is necessary. We explored views about self-testing via in-depth interviews with 24 truckers participating in a randomised controlled trial who refused HIV testing.

Vaccine Efficacy Needed for a COVID-19 Coronavirus Vaccine to Prevent or Stop an Epidemic as the Sole Intervention.

Introduction: Given the continuing COVID-19 pandemic and much of the U.S. implementing social distancing owing to the lack of alternatives, there has been a push to develop a vaccine to eliminate the need for social distancing.

The Crisis We Are Not Talking About: One-in-Three Annual HIV Seroconversions Among Sexual and Gender Minorities Were Persistent Methamphetamine Users.

Introduction: Methamphetamine use is once again on the rise among sexual and gender minorities who have sex with men (SGMSM).

Methods: Baseline and 12-month data are taken from an ongoing cohort study of n = 4786 SGMSM aged 16-49 at risk for HIV from across the United States. Participants completed annual online surveys and at-home HIV testing (oral fluid samples returned through mail).