Vaccine calculator: Another vaccine

If you are 5 years old or older and: 

Received a COVID-19 vaccine listed for emergency use by WHO, but not approved or authorized by the FDA;


Completed a mix-and-match series composed of any combination of FDA-approved, FDA-authorized, or WHO-EUL COVID-19 vaccines,

You can get an omicon booster in Colorado.

You should get an omicron vaccine at least two months after completing your primary series or receiving your most recent original booster dose.

If you or your child recently had COVID-19 and are not immunocompromised or at high risk, you may consider waiting up to three months after the infection to schedule the next dose. Talking with a health care provider can help you learn more about the best time to schedule the next dose, but it’s not required.


Find a vaccine near you.


Use the tool below to find out what day to schedule your next dose.

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Add Days Calculator

Enter the date of your most recent dose in the “date” field. You can click on the calendar icon to select the date or type it in.

Enter “150” next to “days to add.”