Human nighttime outdoor activities in a rural community of north-central Nigeria: Implications for residual malaria transmission

摘要

Introduction: Residual transmission can limit control efforts to tackle the scourge of malaria in ruralsettings where nighttime activities are mostly outdoor. This cross-sectional study determined the risk ofnight-time activities for malaria transmission in a Nigerian communityMethods: We administered a structured questionnaire to collect data from three communities in DokanTofa district while outdoor catches of mosquitoes were carried out to determine the presence of malariavectors and ascertain sporozoite rates.Results: January-March was the most likely period of the year for inhabitants to sleep outside. Tengzetcommunity was the most likely to have inhabitants sleeping outside during the first quarter of the year. Asporozoite rate of 10.3% was observed with Anopheles gambiae s.l as the most abundant anophelinespecies encountered.Conclusion: As climate change worsens, its’ toll on human activities at night will prevent theinterruption of transmission and endanger the outcomes of control interventions.