Weekly Animal-Borne Disease Reporting
The Boulder County Public Health Vector Control Program aims to prevent the spread of disease from vectors (animals) to humans.
Week 34: Aug. 23 – 29, 2026
Rabies
- To date, 66 samples have been submitted for rabies testing and 6 have tested positive. In week 34, 1 bat was submitted for testing and was negative.
- Statewide, 43 animals have tested positive for rabies.
- In 2025, seven bats tested positive in Boulder County.
Mosquitoes
- WNV transmission risk remains low throughout the region.
- Culex mosquitoes (WNV vectors) and total mosquito counts (all species) remained below the five-year average.
- Twelve sample pools were submitted for WNV testing. Three pools were positive for WNV, one from each zone.
Plague/Tularemia/Hantavirus
- No specimens were submitted for plague or hantavirus this week.
