Tdap (adacel) 3CA22C1 0.5 mL was given on 12/18/24 to client. Client was 6 years old when dose was given. Error was discovered on 01/16/25 when RN had patient again and discovered that wrong vaccine was given. RN notified nurse manager of error and per review of CDC and immunize.org as well as standing orders no harm could come of giving this dose. RN started correct series with Dtap on 1/16/25 and educated client and FOC of client of error and new plan for restarting Dtap series. FOC and client stated understanding and were okay with plan going forward