a 5 inch long and 4 inch wide welt on her arm; probably 5 inches long by about 4 inches across was red; it was almost like a belt on the area; like a little bit puffy, not huge, but just puffiness and it did not hurt; it just had a slight itch to it; it was almost like a belt on the area; like a little bit puffy, not huge, but just puffiness and it did not hurt; it just had a slight itch to it; if she put her hand over there and she pushed, touched it, then it ached a little bit; This is a spontaneous report received from a contactable reporter (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 66-year-old female patient received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 19Oct2023 as dose 1, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 5 (BOOSTER), SINGLE, Batch/Lot number: unknown), for COVID-19 immunization; Bnt162b2 (DOSE 4 (BOOSTER), SINGLE, Batch/Lot number: unknown), for COVID-19 immunization; Bnt162b2 (DOSE 3 (BOOSTER), SINGLE, Batch/Lot number: unknown), for COVID-19 immunization; Bnt162b2 (DOSE 2, SINGLE, Batch/Lot number: unknown), for COVID-19 immunization; Bnt162b2 (DOSE 1, SINGLE, Batch/Lot number: unknown), for COVID-19 immunization. The following information was reported: URTICARIA (non-serious), outcome "unknown", described as "a 5 inch long and 4 inch wide welt on her arm"; ERYTHEMA (non-serious), outcome "unknown", described as "probably 5 inches long by about 4 inches across was red"; SKIN SWELLING (non-serious), PRURITUS (non-serious), outcome "unknown" and all described as "it was almost like a belt on the area; like a little bit puffy, not huge, but just puffiness and it did not hurt; it just had a slight itch to it"; PAIN (non-serious), outcome "unknown", described as "if she put her hand over there and she pushed, touched it, then it ached a little bit". Additional information: The patient had all the Pfizer vaccines so far for COVID and she had not had anything. She had no side effects. But she had this one, but she had a 5 inch long and 4 inch wide welt on her arm. Her arm was not sore, it didn't hurt if she touch her arm. The patient was asking if that was something that's normal and if it should be going away. The patient further reported that she got the Covid-19 mRNA Viatris-Pfizer, which had some strange name Comirnaty or something like that, further clarified as Comirnaty 2023-2024. She had had five boosters or five shots altogether and not a one had bothered with anything and then she got this one on Thursday and she didn't have anything that really hurt or anything that way with her arm where the shot was given, it was like probably 5 inches long by about 4 inches across was red. It was almost like a belt on the arm that it was like a little bit puffy, not huge, but just puffiness and it did not hurt, it just had a slight itch to it. If she put her hand over there and she pushed, touched it, then it ached a little bit. But she just didn't know, she just thought that she never had a reaction of any kind, or even felt the shot, or even noticed anything, and all of a sudden, now, she was getting this. All she wanted to ask was if that was a normal thing.  The information on the batch/lot number for bnt162b2 omi xbb.1.5 has been requested and will be submitted if and when received.