Jaap Koot

Cervical high-risk human papillomavirus infection and its associated risk factors: a community-based cross-sectional study in hard-to-reach areas in Bangladesh

Objectives This study aimed to determine the prevalence of cervical high-risk human papillomavirus (hrHPV) in a community-based setting and its risk factors association in women living in hard-to-reach areas in Bangladesh. Design A cross-sectional study Setting The study was carried out in six subdistricts, located in hard-to-reach and climate-impacted regions of Bangladesh. Participants A total of 8000 married women aged 30–60 years were invited for screening. Women who were unable to give consent, were pregnant or had a hysterectomy with removal of the cervix, previous screening less than 5 years, or treatment of the cervix or had symptoms of potential cervical cancer were excluded. Interventions A community-based hrHPV self-collected screening for cervical cancer was conducted from June 2022 to July 2023. Main outcome measures Prevalence of cervical hrHPV and risk factor association. Results 11 127 women were eligible for screening; 7850 women submitted hrHPV self-swabs, 7828 valid HPV test results were reported and 164 women (2.1%) tested hrHPV positive. Women living in the North were 2.1 times more likely to be hrHPV positive compared with women living in the South (adjusted OR (AOR)=2.1, 95% CI: 1.5 to 3.8, p=0.023) and widowed women were 3.0 times more likely to be hrHPV positive than married women (AOR=3.0, 95% CI: 1.7 to 5.3, p=0.001). Another risk factor associated with testing hrHPV positive was the use of hormonal contraceptives for 5 years and above (AOR=7.0, 95% CI: 2.0 to 24.4, p=0.002). Conclusion The study identified a low overall prevalence of hrHPV infection (2.1%) among women in hard-to-reach areas in Bangladesh, with some regional variations. Higher prevalence was observed in widowed compared with married women and among women reporting more than 5 years of hormonal contraceptive use. This study shows no evidence of particularly high-risk groups in hard-to-reach areas in Bangladesh. The findings support the feasibility of implementing a nationwide hr-HPV-based self-sampling strategy as a viable approach to reach WHO targets for reducing the burden of cervical cancer. Recommendation for policymakers to support future research to identify hrHPV prevalence among women in comparable groups in other geographically remote areas in Bangladesh. Trial registration number NCT05234112 .

High-risk human papillomavirus testing for underscreened populations: cost-effectiveness and affordability in three country settings

The high-risk human papillomavirus (hrHPV)-based screening recommended by the World Health Organization is expected to lead to worldwide reduction of the cervical cancer burden, but the countries burdened most by cervical cancer also struggle with the costs of transitioning to this approach. Country-specific evaluations are needed to inform policymakers on implementation of hrHPV-based screening for their setting. Following initial implementation in Uganda, Bangladesh and Slovakia focused on underscreened women in the PRESCRIP-TEC project, we investigated the potential cost-effectiveness and affordability of hrHPV-based screening strategies. Country-specific model-based cost-effectiveness and budget impact analyses were conducted for the three countries, comparing the PRESCRIP-TEC strategy with the existing screening strategy in each setting. Data from initial project implementation informed the relevant model parameters. The PRESCRIP-TEC strategy resulted in disability-adjusted life year (DALY) gains in all three countries. The cervical cancer incidence rate was reduced by a third for Uganda, 15% for Bangladesh and 11% for Slovakia. The incremental cost-effectiveness ratios were UGX 0.56 million per DALY for Uganda (I$ 475), BDT 76 thousand per DALY for Bangladesh (I$ 1698) and EUR 1782 (I$ 3637) per DALY for Slovakia. Substantial additional funding will be required to enable implementation, particularly in relation to the initial start-up costs. The provided estimates can serve to inform policymakers and researchers in the context of implementing hrHPV-based screening in diverse settings.

High-risk human papillomavirus testing for cervical cancer screening in Uganda: Considering potential harms and benefits in a low-resource setting

Objectives The World Health Organization supports both the screen-and-treat (ST) approach and the screen, triage and treat (STT) approach to cervical cancer screening using high-risk human papillomavirus (hrHPV) testing. For Uganda, the sequence of hrHPV-ST and hrHPV-STT could be similar, with visual inspection with acetic acid (VIA) after positive hrHPV tests in both. To consider potential tradeoffs (overtreatment in ST versus missed cancer cases in STT), we compared hrHPV-STT with VIA triage (STT-VIA), and STT with HPV 16/18 genotyping risk stratification, to hrHPV-ST for Uganda, in terms of overtreatment, cervical cancer incidence, and life years, for the general female population of Uganda. Methods A microsimulation model of cervical cancer was adapted. Incremental benefit-harm ratios of STT were calculated as ratios of prevented overtreatment to reduced life years, and to increased cancer cases. Additional scenarios with 20% difference in intra- and inter-screening follow-up between ST and STT were modeled. Results Both STT strategies resulted in life year losses on average compared to ST. STT-VIA prevented more overtreatment but led to increased cervical cancer incidence and life year losses. STT-G-VIA resulted in better harm-benefit ratios and additional costs. With better follow-up, STT prevented overtreatment and improved outcomes. Discussion For Uganda, the STT approach appears preferrable, if the screening sequences of hrHPV-based ST and STT are similar in practice. While VIA triage alone would reduce overtreatment the most, it could also result in more cancer cases. Risk stratification via genotyping could improve STT. Potential follow-up differences and resource availability should be considered by decision-makers when planning Uganda’s hrHPV-based screening strategy.

Understanding cervical cancer awareness in hard-to-reach areas of Bangladesh: A cross-sectional study involving women and household decisionmakers

Introduction In Bangladesh, the uptake of cervical cancer screening is low. Lack of knowledge and understanding of symptoms and risk factors contributes to low screening uptake. The purpose of this study was to explore the knowledge of cervical cancer risk factors and symptoms and to measure the association with socio-demographic characteristics among women and household decisionmakers living in hard-to-reach areas of Bangladesh. Methods A cross-sectional survey was conducted in five districts in Bangladesh among women aged between 30 and 60 years, their husbands, and their mothers-in-law from April to September 2022. Data were collected using a modified version of the validated AWACAN questionnaire tool. The significance level was considered at p-value <0.05 and odds ratios with 95% confidence. Results Nearly 50% of participating women in hard-to-reach areas of Bangladesh and their family decisionmakers had low levels of knowledge of the risk factors and symptoms of cervical cancer. Only 20% of respondents in our survey knew about HPV, the most important risk factor for developing cervical cancer. Most respondents were familiar with the terminology of cervical cancer as a disease; however, approximately 40% of respondents did not know that not adhering to cervical cancer screening could be seen as a risk factor. Women do not make decisions about participation in cervical cancer screening on their own. Knowledge of cervical cancer risk factors and symptoms among decisionmakers was significantly associated with higher education and higher household monthly expenditure. Conclusion Women, their husbands, and mothers-in-law in hard-to-reach areas of Bangladesh had limited knowledge about cervical cancer risk factors and symptoms. Engaging these key decision-makers in targeted health education is vital to improve screening uptake. Conduction of future research to identify and address screening barriers is also essential for effective prevention efforts.