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In low malaria-endemic areas, screening and treatment of cases found nearby passively detected cases — an approach known as reactive case detection (RACD) — has been ineffective. Mass drug treatment of entire populations has other problems, including cost, safety, and acceptability.
In a cluster-randomized trial in Namibia, investigators have now evaluated using reactive focal intervention strategies in response to identified malaria cases. They randomly assigned population clusters to four groups and compared RACD only, reactive focal mass drug administration (rfMDA) only, reactive focal vector control (RAVC) plus RACD, and rfMDA plus RAVC.
RACD involved rapid diagnostic testing and treatment (artemether-lumefantrine and single dose primaqui…