2021-2022 Flu Season: OP Vaccine Resources

The CDC has not yet published an updated 2021-2022 Flu VIS. At this time, they recommend continuing to use the 2019-2020 Flu VIS, interim edition dated 8/15/2019. To be notified by the CDC when this is updated, subscribe to get their email updates here
Note: Practices have up to 6 months to use the prior version. OP will add the new VIS Barcode version, as soon as feasible, after released with an OP update, but in the meantime, you can add it on your own.

Indications and Guidance for Current Flu Season

OP will forecast Due or Behind starting August 1st through June 30th of the following year. During July, the patient's flu vaccination status is considered Current. 


  • Influenza vaccines are not licensed for administration to infants younger than 6 months and should not be used in this age group.
  • Vaccinating children 9 years of age or older, the forecast calls for one influenza vaccine per season. One and done.
  • Vaccinating children 6 months through 8 years of age:
    • Need 2 doses if they have received fewer than 2 doses of any trivalent or quadrivalent influenza vaccine (IIV or LAIV) prior to July 1, 2021. The interval between the 2 doses should be at least 4 weeks (28 days).
    • Require only 1 dose if they have previously received 2 or more total doses of any trivalent or quadrivalent influenza vaccine (IIV or LAIV) prior to July 1, 2021. The 2 previous doses do not need to have been received during the same influenza season or consecutive influenza seasons.

Grace Period: ACIP allows a grace period of 4 days (i.e., vaccine doses administered up to 4 days before the recommended minimum interval or age can be counted as valid). However, the grace period should not be applied to live virus minimum intervals or any other 28-day minimum interval. Day 1 is the day before the day that marks the minimum age or minimum interval for a vaccine. If today is Friday the 5th, the earliest 4 day grace period date would have been Monday the 1st.

Flu Inventory and Templates with flu vaccines

It is recommended that templates containing immunization orders for the Flu vaccine be reviewed and updated, if necessary. Refer to the links below for further information.

Entering Multi-Dose Vials into OP

Now that vaccines have arrived, it’s time to input all that inventory. Don’t worry about the multi-dose vials that just got delivered to your practice. Entering those lots into OP is easy to do when you follow these simple instructions. These written directions and screenshots will guide you through the process of entering the vials – broken out by age range – so your inventory is ready to go when you start your flu clinic.

Immunization Registry

If you have an interface to a vaccine registry, watch for any error messages that may be returned.