The Boulder County Public Health Vector Control Program aims to prevent the spread of disease from vectors (animals) to humans.
Weekly Animal-Borne Disease Reporting
Zoonotic Disease Reporting for 2023
Rabies
- One bat and one raccoon were submitted for testing. Both specimens tested negative.
- Boulder County has had five positive rabies specimens to date: Bat (4), Skunk (1).
- Statewide, 49 specimens have tested positive for rabies in 2023: Bat (41), Skunk (8).
- In 2022, 63 specimens tested positive statewide for rabies: Bat (43), Skunk (26).
West Nile Virus
- Mosquito pool testing and trapping have concluded for the season.
- Statewide, 213 positive mosquito pools have been recorded: Adams (2), Arapahoe (7), Boulder (45), Delta (3), Denver (5), Jefferson (1), La Plata (1), Larimer (132), Pueblo (2), Weld (15).
- Nuisance (non-vector) and Culex (vector) mosquito counts were historically high throughout the 2023 season. Peaking in week 29, with 100,000 total mosquitoes caught, 65% being Culex.
- Nationwide, 1,153 human cases of West Nile virus (WNV) have been reported. To date, 371 human cases have been reported in Colorado: Adams (29), Alamosa (2), Arapahoe (36), Archuleta (1), Boulder (17), Broomfield (3), Chaffee (4), Crowley (1), Custer (1), Delta (6), Denver (61), Douglas (13), El Paso (25), Elbert (1), Fremont (9), Huerfano (1), Jefferson (28), La Plata (7), Larimer (36), Lincoln (1), Logan (3), Mesa (8), Montezuma (5), Montrose (1), Morgan (8), Otero (2), Prowers (3), Pueblo (16), Saguache (1), Teller (3), Washington (2), Weld (37).
Plague/Tularemia/Hantavirus
- No specimens were submitted for plague, tularemia or hantavirus.
