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Cervical precancer screening using self-sampling, HPV DNA testing, and mobile colposcopy in a hard-to-reach community
Kofi Effah1, Ethel Tekpor1, Comfort Mawusi Wormenor1
1Cervical Cancer Prevention and Training Centre, Catholic Hospital, Battor, Ghana.
Background:
The World Health Organization has set ambitious goals to eliminate cervical cancer, necessitating evidence on increasing coverage and access to screening and treatment in high-burden areas. We implemented a pilot program to assess the feasibility of obtaining self-collected specimens for high-risk human papillomavirus (hr-HPV) testing in Nzulezo stilt village, a hard-to-reach community in Ghana, and inviting only hr-HPV-positive women to a central location for colposcopy and possible treatment. Subsequently, this study aimed to investigate the prevalence of hr-HPV infection and cervical lesions among the women and to explore factors potentially associated with hr-HPV infection among them.
Methods:
This pilot community-based cross-sectional study utilized data from screening sessions held from 2 to 20 November 2021 with specimens collected by participants using Evalyn brushes. HPV DNA testing was performed using the Sansure MA-6000 platform, while visual inspection utilized the Enhanced Visual Assessment (EVA) mobile colposcope. Univariate and multivariable nominal logistic regression was employed to explore factors associated with hr-HPV positivity.
Results:
Among 100 women screened (mean age, 43.6 ± 14.5 years), the overall hr-HPV prevalence rate was 39.0% (95% CI, 29.4-49.3). The prevalence rates of hr-HPV genotypes were stratified as follows: HPV16-8.0% (95% CI, 3.5-15.2), HPV18-5.0% (95% CI, 1.6-11.2), and other genotype(s) - 31.0% (95% CI, 22.1-41.0). Single-genotype infections with HPV16 and HPV18 were found in 4.0% (95% CI, 1.1-9.9) and 3.0% (95% CI, 0.6-8.5) of women, respectively. Mixed infections were observed in 1.0% (95% CI, 0.0-5.4) for HPV16 + 18, 3.0% (95% CI, 0.6-8.5) for HPV16 + other type(s), and 1.0% (95% CI, 0.0-5.4) for HPV18 + other type(s). The prevalence of cervical lesions among hr-HPV-positive women screened via colposcopy was 11.4% (95% CI, 3.2-26.7). In the multivariable model, reliance on other sources for medical bill payment was associated with hr-HPV infection (aOR, 0.20; 95% CI, 0.04-0.93), whereas age was not (aOR, 1.02; 95% CI, 0.99-1.05).
Conclusions:
A high hr-HPV infection prevalence was recorded among the women. Utilizing technologies such as self-sampling, HPV DNA testing, and mobile colposcopy enables screening and treatment in remote and hard-to-reach communities where access to cervical cancer screening and treatment would otherwise be limited. Further research is warranted to assess the value and scalability of this approach in similar remote areas and its potential implementation in future programs.
