Series Special Rules

4-dose Series Exception Rules

The 4-dose series above applies unless:

Series complete with 3 doses:
- If patient is >= 4 years old (or will be >= 4 years old at the dose 3 recommended due date), recommend target dose 3 (and final dose) at 4 years old; recommended interval = 6 months. (Minimum interval= 6 months; absolute minimum interval = 6 months - 4 days)
- If dose 3 was administered when the patient was >= 4 years and was administered at least 6 months - 4 days after the previous dose, then the series is complete with 3 doses.
For children who received target dose 4 at >= 8/7/2009 and before 4 years - 4 days of age, evaluate target dose 4 as Accepted/ BELOW_MINIMUM_AGE_FINAL_DOSE (if absolute minimum interval is met). (An additional dose will be recommended at >= 4 years of age).

OPV Rule

If a patient receives shots of OPV administered >= 4/1/2016, these shots do not count towards the series. Evaluate these shots as Invalid with reason code MISSING_ANTIGEN.