Dose 1: Johnson & Johnson; Dose 2: Pfizer; Dose 1: Johnson & Johnson; Dose 2: Pfizer; Headache; Dizziness; Sore arm; Sore throat; Throat feeling tight; Throat feeling tight/ irritation; Very swollen Lymph nodes; face tingling; face tingling and numbness; Chest pain; This is a spontaneous report from a non-contactable reporter (consumer or non HCP). The reporter is the patient.  A 23 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm left, administration date 29Nov2021 (Lot number: EW0196) at the age of 23 years as dose 2 (booster), single for COVID-19 immunisation. Relevant medical history included: "Supraventricular tachycardia", notes: SVT; "Asthma"; "Herpes simplex type II", notes: HSV 2 and "Penicillin allergy", notes: known allergies: Penicillin; (unspecified if ongoing). Concomitant medications included: CONTRAVE; B12; BIOTIN; VITAMIN D3, ACYCLOVIR and PRENATAL (unspecified). Past drug history included: Amoxicillin, reactions: "Drug allergy", notes: known allergies: Amoxicillin; Augmentin, reactions: "Drug allergy", notes: known allergies: Augmentin; Tramadol, reactions: "Drug allergy", notes: known allergies: Tramadol; Hydrocodone, reactions: "Drug allergy", notes: known allergies: Hydrocodone and Codeine, reactions: "Drug allergy", notes: known allergies: Codeine. Vaccination history included: Johnson & johnson covid-19 vaccine (DOSE 1, SINGLE, Lot number: 202A21A), administration date: 06Apr2021, when the patient was 22 years old, for COVID-19 immunisation.  The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious), IMMUNISATION (non-serious) both with onset 29Nov2021, outcome "recovering", and both described as "Dose 1: Johnson & Johnson; Dose 2: Pfizer"; HEADACHE (non-serious) with onset 29Nov2021, outcome "recovering", described as "Headache"; DIZZINESS (non-serious) with onset 29Nov2021, outcome "recovering", described as "Dizziness"; PAIN IN EXTREMITY (non-serious) with onset 29Nov2021, outcome "recovering", described as "Sore arm"; OROPHARYNGEAL PAIN (non-serious) with onset 29Nov2021, outcome "recovering", described as "Sore throat"; THROAT TIGHTNESS (non-serious) with onset 29Nov2021, outcome "recovering", described as "Throat feeling tight"; THROAT IRRITATION (non-serious) with onset 29Nov2021, outcome "recovering", described as "Throat feeling tight/ irritation"; LYMPHADENOPATHY (non-serious) with onset 29Nov2021, outcome "recovering", described as "Very swollen Lymph nodes"; PARAESTHESIA (non-serious) with onset 29Nov2021, outcome "recovering", described as "face tingling"; HYPOAESTHESIA (non-serious) with onset 29Nov2021, outcome "recovering", described as "face tingling and numbness"; CHEST PAIN (non-serious) with onset 29Nov2021, outcome "recovering", described as "Chest pain". The events "Headache", "Dizziness", "Sore arm", "Sore throat", "Throat feeling tight", "Throat feeling tight/ irritation", "Very swollen Lymph nodes", "face tingling", "face tingling and numbness" and "Chest pain" were evaluated at the emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of headache, dizziness, pain in extremity, oropharyngeal pain, throat tightness, throat irritation, lymphadenopathy, paraesthesia, hypoaesthesia and chest pain.  Additional Information: Prior to the vaccination, the patient was not diagnosed with COVID-19. The patient did not receive any other vaccines within four weeks prior to the COVID vaccine. Since the vaccination, the patient had been tested for COVID-19. Treatment for the reported events included Azithromicin, Tylenol and Ibuprofen.  No follow-up attempts are possible. No further information is expected.