Medicine and Health Sciences Commons^™

Ambient Temperature During Pregnancy And Risk Of Maternal Hypertensive Disorders: A Time-To-Event Study In Johannesburg, South Africa, Chérie Part, Jean Le Roux, Matthew Chersichb, Shobna Sawry, Véronique Filippi, Nathalie Roos, Lee Fairlie, Britt Nakstad, Jeroen De Bont, Stanley Luchters

Institute for Human Development

Hypertensive disorders in pregnancy are a leading cause of maternal and perinatal mortality and morbidity. We evaluate the effects of ambient temperature on risk of maternal hypertensive disorders throughout pregnancy. We used birth register data for all singleton births (22–43 weeks' gestation) recorded at a tertiary-level hospital in Johannesburg, South Africa, between July 2017–June 2018. Time-to-event analysis was combined with distributed lag non-linear models to examine the effects of mean weekly temperature, from conception to birth, on risk of (i) high blood pressure, hypertension, or gestational hypertension, and (ii) pre-eclampsia, eclampsia, or HELLP (hemolysis, elevated liver enzymes, low platelets). Low …

Group B Streptococcus Infection During Pregnancy And Infancy: Estimates Of Regional And Global Burden, Bronner P. Gonçalves, Simon R. Procte, Proma Paul, Jaya Chandna, Alexandra Lewin, Farah Seedat, Artemis Koukounari, Ziyaad Dangor, Shannon Leahy, Amina Abubakar

Institute for Human Development

Background: Group B streptococcus (GBS) colonisation during pregnancy can lead to invasive GBS disease (iGBS) in infants, including meningitis or sepsis, with a high mortality risk. Other outcomes include stillbirths, maternal infections, and prematurity. There are data gaps, notably regarding neurodevelopmental impairment (NDI), especially after iGBS sepsis, which have limited previous global estimates. In this study, we aimed to address this gap using newly available multicountry datasets.

Methods: We collated and meta-analysed summary data, primarily identified in a series of systematic reviews published in 2017 but also from recent studies on NDI and stillbirths, using Bayesian hierarchical models, and …

Increased Condom Use Among Key Populations Using Oral Prep In Kenya: Results From Large Scale Programmatic Surveillance, Griffins O. Manguro, Abednego M. Musau, Daniel K. Were, Soud Tengah, Brian Wakhutu, Jason Reed, Marya Plotkin, Stanley Luchters, Peter Gichangi, Marleen Temmerman

Institute for Human Development

Background: Female sex workers (FSW) and men having sex with men (MSM) in Kenya have high rates of HIV infection. Following a 2015 WHO recommendation, Kenya initiated national scale-up of pre-exposure prophylaxis (PrEP) for all persons at high-risk. Concerns have been raised about PrEP users’ potential changes in sexual behaviors such adopting condomless sex and multiple partners as a result of perceived reduction in HIV risk, a phenomenon known as risk compensation. Increased condomless sex may lead to unintended pregnancies and sexually transmitted infections and has been described in research contexts but not in the programmatic setting. This study …