TanzaniaMalariaRural PopulationMosquito ControlAntimalarialsMedicine, African TraditionalRural HealthAfrica, EasternBedding and LinensHIV InfectionsMalaria, FalciparumFluorenesArtemisininsSulfadoxineDeveloping CountriesPrevalencePyrimethamineDrug CombinationsHealth FacilitiesTrachomaCross-Sectional StudiesRural Health Services