Sierra Leone has stopped mass drug administration (MDA) for lymphatic filariasis in 75% of endemic districts in the country following the likely interruption of transmission of the causative parasite in 12 districts as of FY21 (October 2020 – September 2021). Prevalence of infection has been reduced significantly in the remaining four districts due to ongoing MDA.
There are nine SCH/STH-endemic districts in Sierra Leone. Following up to ten rounds of high coverage MDA, a schistosomiasis/soil-transmitted helminthiasis (SCH/STH) impact assessment was conducted in all districts in 2022. A data review meeting will be held in February 2023 to review the data from this survey to assess whether treatment threshold have been met (less than 10% prevalence) and for the country to assess treatment strategies.
Standard Disease-Specific Indicators as of FY21
FY21 is October 2020 through September 2021
of ever-endemic districts have stopped MDA as of FY21
(i.e. have passed stop MDA survey, TAS1 (First Transmission Assessment Survey))
of ever-endemic districts in post-surveillance phase as of FY21
(i.e. have passed last surveillance survey, TAS3 (third Transmission Assessment Survey))