tried to raise her arm and could only raise it halfway and not all the way; sore arm; Sinus infection; This is a spontaneous reported from a contactable female nurse reported for herself. A 57-years-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, batch/lot number: EW0172) via unspecified route of administration in left arm on 14May2021 for COVID-19 immunisation. The patient relevant medical history included sinus infections and had surgery for the same. Concomitant medications were not reported. On 16May2021, the patient experienced sore arm, tried to raise her arm and could only raise it halfway and not all the way and on an unspecified date in May2021, she experienced sinus infection. She stated the only problem she had after the vaccine since, she had no swelling, or no redness was just a sore arm for 4 or 5 days and that is all. Also stated that she did not feel anything and the person that did it was real easy, she stayed there for 30 minutes after and everything was fine and two days later it started little by little but it was not real severe and she did not have to take medication since it was just a mild thing. After 2 days started mild got a little worse but not bad enough where she had to medicate herself for it. Also stated she tried to raise her arm and could only raise it halfway and not all the way so she kept moving it so it would not get stiff. She did not have the sore arm before but it was very minor and lasted 4 or 5 days and when she tried to raise her arm it started becoming more sore and so she would move it slowly and she had no other symptoms like no numbness, no redness, and no swelling. She also reported that she is due for the second dose of vaccine on 04Jun2021 but will not be getting that since she had a sinus infection and was taking medication. It was reported that the sinus infection started more than 10 days, she went to the doctor and got antibiotics for it and went yesterday again to the doctor since it was not getting any better and the doctor changed her medication. She again had to visit her doctor Thursday and cleared from her doctor once all is well. The patient did not want to get the second dose yet so she knows what symptoms are related to the vaccine. As per her, the sinus infection is not related to the vaccine since she has gotten them for years and has even had sinus surgery. It is allergy season now and with the weather change and every time she runs the air conditioner she cannot tolerate it and ends up with a sinus infection. Sinus infection has improved but she still has to finish her medication, the medication that she was originally taking first did not help her get any better was Augmentin (the manufacturer, NDC number, lot number, or expiry date, product strength and count size dispensed was not available). No treatment was received for sore arm and arm and could only raise it halfway and not all the way. Seriousness of the events was reported as non-serious. Outcome of the events sore arm and tried to raise her arm and could only raise it halfway and not all the way was reported as recovered on an unspecified date in May2021 and the event sinus infection was recovering at the time of this report. As per reporter, the events sore arm, tried to raise her arm and could only raise it halfway and not all the way were considered as related however, the event sinus infection was considered as not related to the vaccine.  Information on Lot/Batch number was available. Additional information has been requested.; Sender's Comments: Based on known disease pathophysiology, the event of sinusitis is assessed as not related to BNT162B2, and more likely due to history of sinus infections and surgery.