patient might have received an expired dose with no reported adverse event; Initial information received on 17-Jan-2025 regarding an unsolicited valid non-serious case received from a nurse. This case involves an unknown age and gender patient to whom received an expired dose of IPV (Vero) [IPOL] with no reported adverse event. The patient’s past medical history, medical treatment(s), vaccination(s) and family history were not provided. On an unknown date, the patient might have received a expired dose unknown dose of suspect IPV (VERO) Suspension for injection (strength, expiry date and lot number not reported) via unknown route in unknown administration site as immunization (circumstance or information capable of leading to medication error) (same day latency). Information regarding batch number and expiration date corresponding to the one at time of event occurrence was requested. This suspected adverse reaction report is submitted and classified as a medication error solely and exclusively to ensure the marketing authorization holder’s compliance with the requirements set out in the Directive 2001/83/EC and Module VI of the Good Pharmacovigilance Practices. The classification as a medical error is in no way intended, nor should it be interpreted or construed as an allegation or claim made by the marketing authorization holder that any third party has contributed to or is to be held liable for the occurrence of this medication error.