Vaccine doses administered 4 days or less before the recommended minimum age or interval are considered valid by the CDC. Doses administered ≥ 5 days earlier than the recommended minimum age or interval should be counted as invalid and should be repeated as age-appropriate and spacing the repeat dose after the invalid dose by the recommended minimum interval.
Learn more about the pediatric vaccination schedule.
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Cite this: Abimbola Farinde. Fast Five Quiz: Pediatric Vaccination Schedule - Medscape - Jul 15, 2021.