site of where she got injected got infected and she was diagnosed with Cellulitis/ arm pain; rash is mostly on her shin, on that part of her body, and goes up her leg. It is like little raised bumps; injection site itchy; scratching so much like she would scratch her skin off; scratching so much like she would scratch her skin off; This is a spontaneous report from a contactable consumer (patient).   A 49-year-old female patient received bnt162b2 (BNT162B2), via an unspecified route of administration (at the age of 49-years-old), administered in Arm Left on 06Apr2021 12:00 (Batch/Lot Number: Unknown) as 1st dose, single for COVID-19 immunization. Medical history included cellulitis from a bug bite in a different location. The patient's concomitant medications were not reported. The patient initially stated she had an allergic reaction, then clarified to reaction. She had this reaction three weeks to the date of the first shot. She had to go Urgent Care. The site of where she got injected got infected and she was diagnosed with Cellulitis. Her injection site is all red and infected, it is like a rash there. She further explained she is unsure if this is an allergic reaction, but she has a rash, it is itchy. Her injection site is tender, itchy, warm, and red. She was given antibiotics to take. She does not have her primary care doctors address to provide at time of call. She further clarified today is like the 3rd or 4th day of having a rash, later clarified the start as 24Apr2021. The rash is mostly on her shin, on that part of her body, and goes up her leg. It is like little raised bumps. In the middle of the night she found herself scratching so much like she would scratch her skin off. The rash on her arm feels different. There is site pain there, but it also itches. It feels hard like she just got the shot in the arm. She feels like she wants to scratch and there are bumps there. Time of onset of rash in arm was started mid-afternoon. The arm pain started as clarified 26Apr2021. She confirmed she still feels the arm pain. It is bothersome. She wants to itch it. She does not think it is has gotten worse. However, she just started the antibiotics. Time of onset of arm pain was middle of the night. She went to urgent care yesterday and was officially diagnosed with cellulitis yesterday, 27Apr2021. Treatment included an antibiotic and antihistamine, but she does not have the name to provide. She scheduled an appointment to see the doctor when she gets back home. Sure he will do testing/blood work. The outcome of the events was unknown. The event "site of where she got injected got infected and she was diagnosed with Cellulitis" was considered as serious (medically significant). No history of all previous immunizations with the Pfizer vaccine considered as suspect. No additional vaccines administered on same date of the Pfizer suspect. She was supposed to get the second shot yesterday, but she did not due to everything going on. She wants to know if she should see her doctor before getting the second vaccination. She stated she is not comfortable with getting the second dose. If she wanted to get the second dose wanted to know what the window of opportunity was to get the second dose.  Information on the lot/batch number has been requested.