such as demographic surveillance systems (DSS), or other monitoring information gathered as part of a country-specific HIA policy and infrastructure. But these types of monitoring systems typically are not appropriate or realistic for most small-to-medium projects, whose needs may be met by a few well-chosen indicators, such as anthropometric measurements, village-level disease-specific surveys (malaria),immunization rates, symptom prevalence surveys,anemia prevalence, changes in bed-net usage,drinking-water source and access, and toilet type and access.