Self-reported uptake of STI testing services among adolescents and young people aged 15-24 years: Findings from the Yathu Yathu cluster randomized trial in Lusaka, Zambia

There is little evidence regarding community-based delivery of STI testing and treatment for youth aged 15-24 (AYP) in Zambia. In a cluster-randomised trial, we evaluated whether offering syndromic STI screening through community-based, peer-led sexual and reproductive health services (Yathu Yathu) with referral to a local health facility for testing, increased self-reported testing for STIs (other than HIV) among AYP. Two communities in Lusaka were divided into 10 zones each (20 zones in total); by community, zones were randomly allocated (1:1) to Yathu Yathu or control. Monitoring data were used to describe syndromic STI screening through Yathu Yathu and an endline cross-sectional survey used to evaluate the impact of Yathu Yathu on self-reported ever and recent (last 12 months) STI testing. 10,974 AYP accessed Yathu Yathu; 66.6% (females-67.7%; males-64.7%) were screened for STIs, 6.2% reported any STI symptoms. In the endline survey, 23.3% (n = 350/1501) of AYP who ever had sex ever STI tested; 13.5% (n = 174/1498) who had sex in the last 12 months recently STI tested. By trial arm, there was no difference in self-reported ever or recent STI testing among all AYP. Among men aged 20-24, there was evidence that ever STI testing was higher in the Yathu Yathu compared to control arm (24.1% vs 16.1%; adjPR = 1.67 95%CI = 1.02, 2.74; p = 0.04). Among AYP who ever STI tested, 6.6% (n = 23) reported ever being diagnosed with an STI. Syndromic STI management through community-based, peer-led services showed no impact on self-reported STI testing among AYP. Research on community-based delivery of (near) point-of-care diagnostics is needed. Trial registration number(s): NCT04060420 https://clinicaltrials.gov/ct2/show/NCT04060420; and ISRCTN75609016; https://doi.org/10.1186/ISRCTN75609016.