Posted December 18, 2025
Beginning this week, the Colorado Department of Public Health and Environment will send text messages and email reminders to families of more than 225,000 children ages 6 months to 5 years whose records in the Colorado Immunization Information System show their child/children may be overdue for their annual flu vaccine.
The text messages will come from 45778 and read: “From CDPHE: State public health records indicate that your child/children aged 6 months through 5 years old may be due for their annual flu vaccine. The flu vaccine is the best way to prevent flu-related illnesses and protect your child from serious complications. Contact a vaccine provider today! For locations near you:
cdphe.colorado.gov/find-free-low-cost-vaccine-provider.”
Emails will come from cdphe.vaccine.registry@state.co.us and read:
“Our records indicate that as of Dec. 15, 2025, your child/children between the ages of 6 months through 5 years may be due for their annual flu vaccine. The flu vaccine can help protect your child from serious illness.”
Getting a flu vaccine is especially important for children aged 5 years and younger because they are at higher risk of serious complications if they get sick with the flu. Colorado is currently experiencing increasing flu activity, with a 43% increase in flu hospitalizations during the last week in November.
Contact a health care provider, a local public health agency, or a local pharmacy to make a vaccine appointment today. Find a provider near you.
If your child/children have already received their annual flu vaccine, let us know about it. Complete this Google form to update their record in the Colorado Immunization Information System. You will need to submit a request form for each child.
You can access the immunization record for yourself or your child from the online Colorado Immunization Information System self-serve portal. For more information, including step-by-step directions on how to use the portal, visit cdphe.colorado.gov/immunization/for-the-public/get-a-copy-of-your-records.
Most health insurance plans, including Medicaid and CHP+, cover the full cost of the flu vaccine, so you don’t have to pay anything at providers that accept your health plan. Even if you don’t have any health insurance, you can get the flu vaccine for free or at low cost at one of nearly 600 vaccine providers statewide. Protect yourself and your loved ones against the flu by contacting your health care provider, a local pharmacy, or your local public health agency to make a vaccine appointment today.
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