A Decade of Cervical Cancer Screening: Trends of Incidence in Zambia (2007-2017)

Abstract

Background: Cervical cancer is a highly preventable disease and the major cause of cancer related illness and deaths in Africa. Cervical cancer screening to find precancers before becoming invasive cancer is a well-proven way to prevent cervical cancer. In Zambia alone, over 2000 cervical cancer cases are diagnosed each year accounting for over 30% of new cancer cases with a mortality of above 35%. Women access screening services regardless of HIV status as long as they are sexually active. Cervical cancer screening for HIV-positive women in Zambia remains low despite the high burden of the disease among this population. Aim: We aimed to determine the trends of incidence of cervical precancer lesions among women who ever presented for screening in Lusaka. Methods: We conducted a retrospective cohort study of 95,520 women who presented for cervical cancer screening between 2007 and 2017 at 11 Lusaka district clinics that provide cervical cancer screening. Data were merged from these clinics and cleaned. Descriptive analyses and Logistic regression for data analysis was conducted. Results: The study showed that the mean age of screening among women that were HIV negative and HIV-positive was 34 years. About 12% of the women that screened had a positive VIA result from which 59% were HIV-positive. Results also showed the odds of 4 to be VIA positive when one is HIV-positive. Conclusion: We have data to show that there is an increased risk among HIV-positive women to be VIA positive in Zambia. HIV infected women should be targeted as priority for cervical cancer screening especially in the resource limited countries. Resources directed to HIV care programs in these settings should be leveraged and include cervical cancer screening.