01556nas a2200229 4500000000100000008004100001653000900042653003000051653002500081653003500106653001300141100001200154700001500166700001600181700001000197700001000207700001300217700001300230245013800243520093100381022001401312 2017 d10aNTDs10aStrongyloides stercoralis10aLymphatic filariasis10amass drug administration (MDA)10aTanzania1 aBarda B1 aAlbonico M1 aBuonfrate D1 aAme S1 aAli S1 aSpeich B1 aKeiser J00aSide benefits of mass drug administration for lymphatic filariasis on Strongyloides stercoralis prevalence on Pemba Island, Tanzania.3 a

Strongyloides stercoralis, although endemic in many countries, is not included in helminth control programs. Few data are available on the prevalence and morbidity linked to this infection. We compared data from two studies conducted in 1998 and 2013 on Pemba Island, Tanzania, involving 525 and 509 schoolchildren, respectively. In 1998, the diagnostic method used was Harada Mori, whereas in 2013 diagnosis was made by both Koga agar plate and Baermann methods. The prevalence registered was 41% in 1998 and 7% in 2013. This data suggest that the prevalence of S. stercoralis on Pemba was significantly reduced 7 years after the last ivermectin administration for preventive chemotherapy and underlines the importance and impact of large-scale preventive chemotherapy, which often goes beyond its actual target. Preventive chemotherapy with ivermectin should be recommended in areas where S. stercoralis is endemic.

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