bilateral parotid glands began to swell; parotid glands began to swell, became painful; swelling under the jaw; fatigue; chills; aching; swelling was more prominent on the left side, behind my ear & neck; This is a spontaneous report received from contactable reporter(s) (Other HCP). The reporter is the patient.  A 45 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm right, administration date 16Nov2021 (Lot number: 301458a) at the age of 45 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Crohns dx" (unspecified if ongoing); "hyperthyroidism" (unspecified if ongoing); "high output ileostomy" (unspecified if ongoing); "daily IV hydration therapy/IV mg replacement" (unspecified if ongoing); "Allergies: Yes" (unspecified if ongoing); "mumps" (unspecified if ongoing). The patient took concomitant medications. Vaccination history included: Bnt162b2 (Dose Number: 1, Batch/Lot No: 301458A, Location of injection: Arm Right, Vaccine Administration Time: 01:00 PM, facility type vaccine Pharmacy or Drug Store), administration date: 25Sep2021, when the patient was 45 years old, for COVID-19 immunization. The following information was reported: PAROTID GLAND ENLARGEMENT (non-serious) with onset 30Nov2021, outcome "not recovered", described as "bilateral parotid glands began to swell"; SALIVARY GLAND PAIN (non-serious) with onset 30Nov2021, outcome "not recovered", described as "parotid glands began to swell, became painful"; SWELLING FACE (non-serious) with onset 30Nov2021, outcome "not recovered", described as "swelling under the jaw"; FATIGUE (non-serious) with onset 30Nov2021, outcome "recovering", described as "fatigue"; CHILLS (non-serious) with onset 30Nov2021, outcome "recovering", described as "chills"; PAIN (non-serious) with onset 30Nov2021, outcome "recovering", described as "aching"; SWELLING (non-serious) with onset 30Nov2021, outcome "recovering", described as "swelling was more prominent on the left side, behind my ear & neck". Therapeutic measures were taken as a result of parotid gland enlargement, salivary gland pain, fatigue, chills, pain, swelling.  Additional information: The patient received vaccine at Pharmacy or Drug Store. The patient had not received any other vaccines within 4 weeks prior to the COVID vaccine. Patient had received other medication within 2 weeks of vaccination .Patient did not had covid prior vaccination and had not tested for covid post vaccination. After the first dose,after 8-9 days my bilateral parotid glands began to swell, became painful and swelling was significant on the right parotid with swelling under the jaw & behind the ear. The overall duration was about 9 days with the pain lessening after 4. The left parotid gland was less painful with less swelling. Patient took her second dose on 16Nov21 and 14 days later she started having the same issue but this time the swelling was more prominent on the left side, behind her ear and neck. She currently still having the pains and swelling after the second dose given. Patient had the mumps years before on the left & the swelling was similar to that and the pain. Her doctor thinks it's vaccine related & not the mumps. She had the other expected side effects of fatigue, chills & aching. Patient received voltaren as a treatment drug.  This follow-up is being submitted to notify that the lot/batch number is not available despite the follow-up attempts made. Follow-up attempts completed. No further information is expected.