Does the 4-day grace period apply to the accelerated schedule when giving a vaccine series?
Any accelerated or catch-up schedule should not include doses administered at ages or intervals less than those recommended in Table 1 of the ACIP General Recommendations. The 4-day grace period should not be considered when scheduling doses of vaccine. But if a dose of vaccine is inadvertently administered 4 days earlier than the appropriate age or interval on Table 1, it needn’t be repeated.
