Sections in Influenza Dashboard
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Data are current as of 12/20/2025
Most recent dashboard update: 12/29/2025
What is wastewater surveillance?
Wastewater monitoring can detect viruses spreading from one person to another within a community earlier than clinical testing and before people who are sick go to their doctor or hospital. It can also detect infections without symptoms. If you see increased wastewater viral activity levels, it might indicate that there is a higher risk of infection.
Flu Wastewater Viral Activity Levels
(10/1/2023 - 5/18/2024)
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In Delaware, levels of Flu in wastewater are currently very low.
Total Flu Cases
Week 40 to 20 (10/1/2023 - 5/18/2024)
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New Flu Cases
Week 51 (12/14/2025 - 12/20/2025)
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Flu Hospitalizations
Week 51 (12/14/2025 - 12/20/2025)
Flu Vaccine Doses Administered
Week 40 to 20 (10/1/2023 - 5/18/2024)
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Percentage Vaccinated
Week 40 to 20 (10/1/2023 - 5/18/2024)
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Map of Delaware showing flu cases, vaccinations, and hospitalizations (by residence) shown as rates.