Educational intervention and its effect on medical students’ knowledge and readiness for cervical cancer screening and human papillomavirus vaccination

Dear Editor, I have read with great interest the article by Elsaid et al., “The effect of educational intervention program on knowledge and willingness of medical students to take cervical cancer screening and human papillomavirus vaccine.”[1] This study provides important evidence that targeted education can substantially improve both knowledge and the willingness to undergo cervical cancer screening and human papillomavirus (HPV) vaccination. However, some methodological limitations and potential biases warrant discussion to strengthen the interpretation and applicability of the findings. Furthermore, it is crucial to examine the reliability and limitations of the HPV vaccine as a preventive strategy for cervical cancer. The quasi-experimental pre/post design without a control group or randomization limits causal inference, as improvements in knowledge (from 55.0% to 73.2%) and willingness (e.g., vaccination from 54.9% to 67.0%) could stem from confounding factors such as testing effects, maturation, or external influences (e.g., media exposure). Reliance on self-reported questionnaires introduces recall and social desirability biases, particularly for such sensitive topics as sexual practices or vaccine hesitancy, which may result in underreporting because of stigmatization in Egypt. The 30-point knowledge scale, while reliable (Cronbach’s alpha 0.90), uses arbitrary cutoffs that may not be able to capture nuanced understanding. Besides, the absence of effect sizes alongside statistical significance (e.g., P < 0.001) hinders the assessment of practical impact.[1] Sampling from only 1st- and 2nd-year students at one university, as acknowledged, restricts generalizability to cover advanced students, nonmedical populations, or other regions, potentially creating a bias toward those with limited clinical experience. The short 1-month follow-up, also noted, precludes evaluation of long-term retention or behavior change, while the online delivery of health education may introduce engagement variability without reported metrics. Measures of gender-specific willingness (pap smear for females and counseling for males) limit direct comparisons, and unadjusted confounders (e.g., prior doctor consultations, cited by 41.2%) could skew results.[1] Cervical cancer remains a global health concern, particularly in low- and middle-income countries. Persistent high-risk HPV infection accounts for the majority of cervical cancer cases. HPV vaccination programs have shown significant success in reducing the prevalence of HPV infections.[2-4] However, there are still key limitations to the reliability of HPV vaccination for preventing cervical cancer. First, cervical cancer often develops several decades after HPV infection, meaning that definitive long-term evidence on cancer reduction following vaccination is only now emerging. While reductions in infection and precancerous changes are strong, the observed prevention of actual cancer cases relies on extended surveillance and time. Second, current vaccines (bivalent, quadrivalent, and 9-valent) primarily target HPV types 16 and 18, responsible for about 70% of cervical cancers, but other oncogenic types remain unaddressed, and require continued screening even among vaccinated individuals. Third, the vaccine’s effectiveness is highest before sexual activity and decreases with age or prior exposure – the impact on older or previously exposed populations is less predictable. Immunity appears to last beyond nine years for some vaccines, but the true duration of protection and long-term comparative outcomes remain uncertain.[3,5] In summary, while real-world studies validate the positive impact of HPV vaccination on the reduction of cervical cancer and its precursors, its reliability as a standalone cancer prevention measure has limits. Ongoing surveillance, broader vaccine coverage for more HPV types, effective education, and persistent screening are all essential. As Elsaid et al., rightly recommend, multifaceted strategies, including quality digital platforms for health education, continuing professional education, and expanded health infrastructure, will be critical to the ultimate realization of the goal of eradication of cervical cancer as a public health threat. Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.