Headache; aching feeling overall especially in the joints; aching feeling overall especially in the joints; chills/teeth chattering; uncontrolled jitteriness and shaking of upper extremities; uncontrolled jitteriness and shaking of upper extremities,; nausea; vomiting; feeling extremely weak; later-no appetite for several days; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 75-year-old female patient (not pregnant) received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 20Oct2023 at 11:45 as dose 4 (booster), single (Batch/Lot number: unknown) at the age of 75 years, in left arm for covid-19 immunisation. The patient's relevant medical history included: "Complete Thyroidectomy for Papillary Thyroid" (unspecified if ongoing); "Complete Thyroidectomy for Papillary Thyroid" (unspecified if ongoing), notes: Complete Thyroidectomy; "Sulfa allergies" (unspecified if ongoing); "Immunization" (unspecified if ongoing). Concomitant medication(s) included: FLU VACCINE VII taken for immunisation, on 07Oct2023 as dose 1, single; SYNTHROID; OMEPRAZOLE; FAMOTIDINE. Vaccination history included: Covid-19 vaccine (DOSE 1, SINGLE, UNKNOWN MANUFACTURER), for COVID-19 immunization; Covid-19 vaccine (DOSE 2, SINGLE, UNKNOWN MANUFACTURER), for COVID-19 immunization; Covid-19 vaccine (DOSE 3 (BOOSTER), SINGLE, UNKNOWN MANUFACTURER), for COVID-19 immunization. The following information was reported: HEADACHE (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering"; PAIN (non-serious), ARTHRALGIA (non-serious) all with onset 20Oct2023 at 21:00, outcome "recovering" and all described as "aching feeling overall especially in the joints"; CHILLS (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering", described as "chills/teeth chattering"; ASTHENIA (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering", described as "feeling extremely weak"; DECREASED APPETITE (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering", described as "later-no appetite for several days"; NAUSEA (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering"; FEELING JITTERY (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering", described as "uncontrolled jitteriness and shaking of upper extremities"; TREMOR (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering", described as "uncontrolled jitteriness and shaking of upper extremities,"; VOMITING (non-serious) with onset 20Oct2023 at 21:00, outcome "recovering". Therapeutic measures were not taken as a result of headache, pain, arthralgia, chills, feeling jittery, tremor, nausea, vomiting, asthenia, decreased appetite.  Additional information: the patient experienced headache, aching feeling overall especially in the joints, chills and uncontrolled jitteriness and shaking of upper extremities, teeth chattering, nausea and vomiting (unaware of doing this), feeling extremely weak and in bed for 19 hours with one bathroom break before getting up for a few hours and then going back to bed, unaware of phone and doorbell ringing, later-no appetite for several days. No covid prior vaccination. No covid tested post vaccination.  The information on the batch/lot number for bnt162b2 omi xbb.1.5 has been requested and will be submitted if and when received.