___ shows the concentration of disease.

• A. Community Mapping
• B. Primary Data
• C. Secondary Data
• D. Windshield Survey

Answer: (A)

Understanding how disease concentrates in a community relies on a geographic view of health data. Community mapping plots disease indicators on a map, revealing where rates are higher, where clusters or hotspots exist, and how the burden varies across neighborhoods or districts. This spatial visualization makes it easier to target interventions and allocate resources to areas with the greatest need. Primary data are data collected directly from people or measuring individuals, which can inform disease patterns but don’t automatically produce a geographic distribution. Secondary data come from existing sources and can be used for mapping, but the act of showing concentration through a visual geographic display is achieved by community mapping. A windshield survey provides a quick, general sense of the community’s characteristics and resources, not a precise depiction of disease concentration.