Human papillomavirus detection in liquid-based cytology and cervical histology samples among women living with human immunodeficiency virus in Zambia.

OBJECTIVES

Cervicovaginal human papillomavirus (HPV) prevalence is high among women living with human immunodeficiency virus (WLHIV), but not all HPV genotypes detected in liquid-based cytology (LBC) may be present in cervical tissue. We explored HPV genotype concordance in paired LBC and histology samples among WLHIV in Zambia.

METHODS

WLHIV aged 18-65 years who were enrolled in a cervical screening test accuracy study were invited for follow-up after 30-36 months. LBC samples and two or more cervical biopsies were collected and tested for 28 HPV genotypes (Anyplex II/Allplex HPV28, Seegene, South Korea). HPV prevalence and genotype-specific agreement were assessed using Cohen's kappa.

RESULTS

From April 2022 to May 2023, 242 WLHIV (22 with high-grade squamous intraepithelial lesions) had valid paired HPV results. The prevalence of any HPV was similar on LBC (39%) and histology (34%). Multiple-type infections were more common on LBC (18%) than on histology (10%). HPV 16 was the most frequent genotype: 9% (n = 22) on LBC, and 15% (n = 36) on histology. Agreement for any high-risk HPV genotype was 66.1% (kappa = 0.27).

CONCLUSIONS

Among Zambian WLHIV with mostly low-grade cervical lesions, LBC showed more multiple-type HPV infections and limited agreement with histology samples, possibly reflecting transient infections detected by LBC. The frequent detection of HPV 16 in histology samples but not in LBC warrants further investigation.