It was reported that during a scheduled immunization of a patient (age unidentified), tdap vaccine leaked from behind and onto the plunger of the 3 ml syringe.Per report, 0.5 ml of the tdap vaccine was placed inside the syringe and leaking was noted as medical assistant was pushing the plunger to administer the vaccine into the patient.The medical assistant informed the primary care physician that patient did not receive the entire dose of the administered vaccine and patient was told of the need for an additional dose to assure immunity.Per report, the patient was rescheduled to receive the additional dose a month later and patient elected to cancel appointment.Reportedly, the appointment was now scheduled for (b)(6) 2019.Due to the reported event and need for additional vaccine, this medwatch is being filed.The sample was returned for evaluation and the complaint was confirmed.A definitive root cause for the reported issue could not be determined at this time.No additional information is available.If additional information becomes available, a supplemental medwatch will be filed.
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