a little bit of achiness in the shoulder but not too much / achiness in the right shoulder; arm soreness, not at the injection site, more in the back of the arm; Lightheadedness; have some chills; had a change of temperature; 4th dose Moderna COVID-19 vaccine, 5th dose Pfizer BioNTech COVID-19 Bivalent; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 62-year-old male patient received BNT162b2, BNT162b2 OMI BA.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 08Sep2022 at 11:00 as dose 5 (booster), 0.3 ml single (Lot number: GH9694) at the age of 62 years, in left arm for COVID-19 immunisation. The patient's relevant medical history included: "Obesity" (ongoing), notes: started when he was young. Concomitant medication(s) included: TYPHIM VI taken for typhoid fever immunisation, on 01Sep2022 as dose number unknown, single; BOOSTRIX taken for immunisation, in 2022 as dose number unknown, single; TWINRIX taken for hepatitis immunisation, on 31Aug2022 as dose 1, single. Vaccination history included: Moderna COVID-19 vaccine (DOSE 4 (BOOSTER), SINGLE, Lot: 027L21A), administration date: 05Apr2022, when the patient was 62-year-old, for COVID-19 immunization; BNT162b2 (DOSE 3 (BOOSTER), SINGLE, Lot: FF2589, Right arm), administration date: 19Sep2021, when the patient was 62-year-old, for COVID-19 immunization; BNT162b2 (DOSE 2, SINGLE, Lot: EN6201, Right arm), administration date: 24Feb2021, when the patient was 61-year-old, for COVID-19 immunization; BNT162b2 (DOSE 1, SINGLE, Lot: EL3302, Right arm), administration date: 03Feb2021, when the patient was 61-year-old, for COVID-19 immunization; Hep AB Twinrix vaccine (DOSE 1, SINGLE, Right arm), administration date: 2013, when the patient was 54 years old, for hepatitis immunisation. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious) with onset 08Sep2022 at 11:00, outcome "unknown", described as "4th dose Moderna COVID-19 vaccine, 5th dose Pfizer BioNTech COVID-19 Bivalent"; FEELING OF BODY TEMPERATURE CHANGE (non-serious) with onset 08Sep2022 at 12:00, outcome "recovered" (08Sep2022 at 12:30), described as "had a change of temperature"; CHILLS (non-serious) with onset 08Sep2022 at 12:00, outcome "recovered" (08Sep2022 at 12:30), described as "have some chills"; DIZZINESS (non-serious) with onset 08Sep2022 at 12:30, outcome "not recovered", described as "Lightheadedness"; ARTHRALGIA (non-serious) with onset 08Sep2022 at 12:30, outcome "recovered" (08Sep2022 at 12:45), described as "a little bit of achiness in the shoulder but not too much / achiness in the right shoulder"; PAIN IN EXTREMITY (non-serious) with onset 08Sep2022 at 12:30, outcome "recovered" (08Sep2022 at 12:45), described as "arm soreness, not at the injection site, more in the back of the arm". Therapeutic measures were not taken as a result of chills, feeling of body temperature change, arthralgia, pain in extremity, dizziness.  Additional information: The patient switched between vaccines because he stated diversity may help and for no other reason. Two hours into the Pfizer BioNTech COVID-19 vaccine bivalent version (NDC: 59267-0304-01), the patient had some chills and a little bit of achiness in the right shoulder but not too much. The chills happened for 20 minutes and were very mild and not feeling them all that much. He said he just had a change of temperature. His arm didn't feel that sore. It was just an hour from time of report that he did feel it. It was very mild. He had lightheadedness and he just felt that again. He stated the arm soreness had gone away. He later stated it was not at the injection site, but rather behind it. The achiness in right shoulder only lasted about 15 minutes and was okay now. The events did not result to a visit to the emergency room nor the physician office. The patient received no medical treatment and do not intend to. No relevant tests were conducted.  Follow-up attempts are completed. No further information is expected.