Male pediatric client was accompanied to the COVID-19 Vaccination site with parents, and his mother was the consenting parent for vaccination.   Per Vaccinating Nurse & the vaccine management Pharmacist, each reported to this Charge Nurse the following:  At 10:55 AM Vaccinating nurse reported to this Charge Nurse that the child came into pediatric vaccination tent #1 with parents for COVID-19 vaccination. Per the vaccinating nurses report the child was to receive first dose of primary series Moderna 6months-5years old COVID-19 vaccine. Per Pharmacist report to this Charge Nurse, the pharmacist was performing pediatric vaccine management this shift and the pharmacist brought Moderna Bivalent Booster 6months-5years.   The pharmacist states that they did a provider-to-provider hand-off and confirmed verbally that they were handing the vaccinating nurse Moderna Bivalent Booster 6months-5years as they believed they had been requested. The vaccinating nurse confirms that the pharmacist brought them this dose.   This verbal vaccine hand-off was loud enough that it was overheard by this Charge Nurse who was assisting clients in the post-vaccination clinical observation area that is near pediatric vaccination tent #1. Shortly after this hand-off exchange this Charge Nurse received pediatric client hand-off in the post-vaccination area from the vaccinating nurse who discreetly reported to this Charge Nurse that they believe they may have given the incorrect COVID-19 dose to the child and realized that they failed to double check the lot number with their scribe, which they notified this Charge Nurse about immediately.  [End Vaccinating Nurse and Pharmacist report information as communicated to Charge Nurse]  The Charge Nurse reviewed the child?s COVID-19 vaccination card with the consenting parent and noted that the pediatric client?s CDC COVID-19 vaccination care showed documentation that he had received the following: Moderna Bivalent Booster 6months-5year, Lot # 215K22A, Left Anterior Thigh at 10:53 AM on 2/11/2023 by LPN. After confirming with the parents, the Charge Nurse asked them to please wait in the post-vaccination area and that we would follow-up with them shortly. Then the Charge Nurse immediately called and consulted both the On-call Medical Provider and the Site Supervisor who offered clinical guidance.   This Charge Nurse followed-up with the pediatric client?s parents as directed by the On-call Medical Provider and Site Supervisor. Site Supervisor to follow-up with parents again later by phone with further medical provider clinical guidance. It was also delegated to the Charge Nurse by the Site Supervisor to give the consenting parent the Site Supervisor?s work phone contact number just in case the parents wanted to call with any further questions or concerns. Charge Nurse to complete all required incident reporting documentation.   The child?s parents were understanding of the vaccination occurrence and verbalized understanding of communication and education given to them as was delegated to this Charge Nurse by Site Supervisor and On-call Medical Provider. Pediatric client was safely observed in observation by Charge Nurse, and left the clinic without issue accompanied by their consenting parent.