New hiv infection estimation from program data of key populations

Abstract

In India, HIV sentinel surveillance is carried out to estimate the prevalence of HIV for calibrating the response. However, estimate of new HIV infections is also needed to monitor the effectiveness of prevention strategies. We used Targeted Intervention Program data of Injecting Drug Users (IDUs) and Female Sex Workers (FSWs) enrolled in Targeted Intervention (TI) programme in Aizawl district of Mizoram state to estimate the trend in new HIV infection rate. Those who had tested HIV positive in a particular year but were negative in the previous HIV test were considered to be newly infected. New HIV infections were found to have a rising trend from 2010 to 2019 (p<0.01). The new infection rate of HIV was 6.73% among IDUs and 1.94% among FSWs in 2019. This analysis, which requires minimal resources, may be undertaken at regular interval in all Targeted Intervention Programs to monitor the effect of preventive strategies at local level.