Why does the map only use ranges of cases (e.g., 5-9 cases) and not exact numbers?

Health-related data, including when someone tests positive for COVID-19, is protected by the Health Insurance Portability and Accountability Act (HIPAA). Under this federal law, public health agencies and healthcare providers must do everything within our power to protect the privacy of residents or patients. We use ranges of cases in our dashboard to assure the privacy of residents with COVID-19 while still providing meaningful data to our municipalities.

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1. How do I use the interactive map?
2. What does the dark blue color on the map mean?
3. Why is there a higher concentration of cases in some areas than others?
4. Why does the map only use ranges of cases (e.g., 5-9 cases) and not exact numbers?
5. Are there cases of COVID-19 in my community?