Boulder County government offices are closed Wednesday, June 19, in observance of Juneteenth. Primary Elections Vote Center locations are open.

mom taking daughter's temperature

Influenza (Flu)

Seasonal Flu Shot

Influenza (also known as “flu”) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness and, at times, can lead to death.

The current flu shot, which includes antigens for H1N1 and influenza A and B, is recommended for all persons over six months of age.

Find an immunization clinic near you.

Learn More about Flu

Centers for Disease Control & Prevention

Childrenlittle girl with blanket wrapped around her and a thermometer in her mouth

Boulder County Public Health (BCPH) Immunization Clinics offer flu shots for clients under 18 who have Medicaid or no insurance.


During the flu season, adults can receive the vaccine at many locations throughout the county including most pharmacies. Call the Colorado Department of Public Health & Environment at CO HELP 1-877-462-2911 for locations, dates and times, costs, ages immunized, types of vaccines provided, types of insurance accepted, and if an appointment is required. Uninsured or underinsured adults, aged 19 years and older, can receive their flu shot at Boulder County Public Health Immunization Clinics.

Contact Us

Immunization Program

Boulder: 303-441-7500
Longmont: 303-678-6166
Submit a question


3450 Broadway
Map and Directions
Hours: 8 a.m. to 4:30 p.m.


515 Coffman St., Second Floor
Map and Directions
Hours: 8 a.m. to 4:30 p.m.

Boulder County Public Health website