Ab Schaap

Datos Biográficos

ID	3934701
NOMBRE	Ab Schaap
NOMBRES	Ab
APELLIDO	Schaap
FIRMA	AB SCHAAP
AFILIACIONES	London School of Hygiene & Tropical Medicine
ORCID	0000-0002-5959-526X
VERIFICADO	Sí
TOTAL DE OBRAS	18
TOTAL DE CITAS	1
TOTAL COMO AUTOR	18
TOTAL COMO EDITOR	0
PRIMER AÑO DE PUBLICACIÓN	2005
AÑO MÁS RECIENTE DE PUBLICACIÓN	2026
ÍNDICE H	1

Migration and its impact on universal HIV testing and treatment in the HPTN 071 (PopART) study communities
Open AccessDavid Macleod, Sian Floyd et al.ARTICLEPLOS Global Public Health2026
Migrants have been identified as a population left behind by the AIDS (Acquired Immune Deficiency Syndrome) response, with evidence showing poorer HIV (Human Immunodeficiency Virus) outcomes and reduced intervention effectiveness in mobile populations. We used data from the HPTN 071 (PopART) trial (ClinicalTrials.gov number, NCT01900977) to investigate migration and HIV-related indicators, assessing whether community migration influenced PopART t…
Clinical outcomes of participants of a TB prevalence survey with an abnormal chest X-ray but no evidence of TB disease after a median follow-up of 9 months in Zambia and South Africa
Open AccessMaría Rupérez, Jacob Busang et al.ARTICLEPLOS Global Public Health2025
WHO recommends computer-aided detection (CAD) in chest X-ray (CXR) for systematic screening of TB. Increased detection of individuals with high CAD score but without bacteriologically confirmed TB can be expected, requiring guidance on their clinical management. We followed participants of a TB prevalence survey (TBPS) in Zambia and South Africa with a high CAD score but no bacteriologically confirmed TB over a median time of 9 months and assesse…
Self-reported uptake of STI testing services among adolescents and young people aged 15–24 years
Open AccessB Hensen, Mwelwa Phiri et al.ARTICLEPLOS Global Public Health2024
There is little evidence regarding community-based delivery of STI testing and treatment for youth aged 15–24 (AYP) in Zambia. In a cluster-randomised trial, we evaluated whether offering syndromic STI screening through community-based, peer-led sexual and reproductive health services (Yathu Yathu) with referral to a local health facility for testing, increased self-reported testing for STIs (other than HIV) among AYP. Two communities in Lusaka w…
Comparing patterns of recent and remote Mycobacterium tuberculosis infection determined using the QuantiFeron-TB Gold Plus assay in a high TB burden setting
Open AccessModupe Amofa-Sekyi, Ab Schaap et al.ARTICLEPLOS Global Public Health2024
One quarter of the world’s population is estimated to be infected with Mycobacterium tuberculosis. Identifying recent TB infection (TBI) offers an avenue to targeted TB preventative therapy provision, and prevention to disease progression. However, detecting recent TBI remains challenging. The QuantiFERON-TB Gold Plus assay (QFT-Plus) claims to have improved sensitivity in detecting recent TBI, by the addition of the TB2 antigen tube to the TB1 t…
The impact of an innovative community-based peer-led intervention on uptake and coverage of sexual and reproductive health services among adolescents and young people 15–24 years old
Open AccessMwelwa Phiri, Mwelwa Muleba Phiri et al.ARTICLEBMC Public Health2024
ISRCTN75609016 (11/10/2021), clinicaltrials.gov number NCT04060420 (19/08/2019); retrospectively registered
Factors associated with use of community-based, peer-led sexual and reproductive health services by adolescent boys and young men aged 18–24 in Lusaka, Zambia
Open AccessMwelwa Phiri, B Hensen et al.ARTICLEPLOS Global Public Health2023
Introduction Adolescents and young people (AYP) aged 15–24 years have the least access to facility-based sexual and reproductive health (SRH) services, including HIV services. The Yathu-Yathu cluster-randomized trial (CRT) in Zambia tested whether a novel peer-led community-based approach increased knowledge of HIV status amongst AYP. In this nested case-control study, we aimed to identify factors associated with non-attendance to the Yathu Yathu…
The impact of a combined TB/HIV intervention on the incidence of TB infection among adolescents and young adults in the HPTN 071 (PopART) trial communities in Zambia and South Africa
Open AccessKwame Shanaube, Ab Schaap et al.ARTICLEPLOS Global Public Health2023
Background HPTN071 (PopART) was a cluster randomized trial conducted in Zambian and South African (SA) communities, between 2013–2018. The PopART intervention (universal HIV-testing and treatment (UTT) combined with population-level TB symptom screening) was implemented in 14 communities. The TREATS study (2017–2021) was conducted to evaluate the impact of the PopART intervention on TB outcomes. We report on the impact of the combined TB/HIV inte…
Prevalence and risk factors of M tuberculosis infection in young people across 14 communities in Zambia and South Africa
Open AccessModupe Amofa-Sekyi, Ab Schaap et al.ARTICLEPLOS Global Public Health2023
Background From 2018–2021 the TB Reduction through Expanded Antiretroviral Treatment and TB Screening (TREATS) project took place in 21 Zambian and South African communities. The TREATS Incidence of TB Infection Cohort Study was conducted in adolescents and young people (AYP), aged 15–24 years in 14 communities. We describe the baseline prevalence and risk factors of Mycobacterium tuberculosis ( M . tuberculosis) infection among this cohort and e…
Prevalence of mental distress in adults with and without a history of tuberculosis in an urban Zambian community
Open AccessTila Mainga, Ab Schaap et al.ARTICLECambridge Prisms Global Mental…2023
People with tuberculosis (TB) are susceptible to mental distress. Mental distress can be driven by biological and socio-economic factors including poverty. These factors can persist beyond TB treatment completion yet there is minimal evidence about the mental health of TB survivors. A cross-sectional TB prevalence survey of adults was conducted in an urban community in Zambia. Survey participants were administered the five-item Self Reporting Que…
Creating access to Sars-CoV-2 screening and testing through community-based Covid-19 case-finding, observations from cross-sectional studies in Lesotho and Zambia
Open AccessEveline Klinkenberg, Bulemba Katende et al.ARTICLEBMC Public Health2023
In conclusion, in this project we learned that implementing COVID-19 screening and testing by lay health workers in the community is possible. Characteristics of the population screened, tested, and identified to have SARS-CoV-2 are described to help guide development of future testing strategies
Access to menstrual hygiene products through incentivised, community-based, peer-led sexual and reproductive health services before and during the Covid-19 pandemic
Open AccessB Hensen, Hensen B et al.ARTICLEBMC Public Health2022
Availability of MHP through Yathu Yathu provided a large number of AGYW with access to these products. Hubs seemed particularly important for adolescent girls. Community-based, peer-led hubs should be considered as spaces to provide AGYW access to affordable and effective MHP
Uptake of HIV Testing Services Through Novel Community-Based Sexual and Reproductive Health Services
Open AccessB Hensen, Mwelwa Phiri et al.ARTICLEAIDS and Behavior2021
Application of an HIV Prevention Cascade to Identify Gaps in Increasing Coverage of Voluntary Medical Male Circumcision Services in 42 Rural Zambian Communities
Open AccessB Hensen, Elizabeth Fearon et al.ARTICLEAIDS and Behavior2019
Understanding the Time Needed to Link to Care and Start ART in Seven HPTN 071 (PopART) Study Communities in Zambia and South Africa
Open AccessThe HPTN study team, Janet Seeley et al.ARTICLEAIDS and Behavior2018
To achieve UNAIDS 90:90:90 targets at population-level, knowledge of HIV status must be followed by timely linkage to care, initiation and maintenance of antiretroviral therapy (ART) for all people living with HIV (PLHIV). Interpreting quantitative patterns using qualitative data, we investigate time taken to link to care and initiate ART amongst individuals aware of their HIV-status in high HIV-prevalence urban communities in the HPTN 071 (PopAR…
“The difference that makes a difference”
Open AccessVirginia Bond, Chiti Bwalya et al.ARTICLEAIDS Care2016
This paper explores contextual heterogeneity within a community randomised trial HPTN 071 (Population Effects of Antiretroviral Treatment to Reduce HIV Transmission) carried out in 21 study communities (12 Zambian, 9 South African). The trial evaluates the impact of a combination HIV prevention package (including household-based HIV counselling and testing and anti-retroviral treatment (ART) eligibility regardless of CD4-count) on HIV incidence. …
Frequency of HIV-testing and factors associated with multiple lifetime HIV-testing among a rural population of Zambian men
Open AccessB Hensen, James Lewis et al.ARTICLEBMC Public Health2015
Although men's levels of ever-testing for HIV have increased, strategies need to increase the lifetime frequency of HIV-testing among men at continued risk of HIV-infection
Factors Associated with HIV-Testing and Acceptance of an Offer of Home-Based Testing by Men in Rural Zambia
Open AccessB Hensen, James Lewis et al.ARTICLEAIDS and Behavior2014
Monitoring cause-specific adult mortality in developing countries
Open AccessGeorges Reniers, Tekebash Araya et al.ARTICLESocial Science & Medicine2005Citada por: 1Referencias: 4