very achy; tired; mildly sore throat; sore arm; Day after vaccine, had a 99.5 temperature; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP).  A 12-year-old female patient (not pregnant) received bnt162b2 omi xbb.1.5 (BNT162B2 OMI XBB.1.5), on 07Oct2023 as dose 1, single (Lot number: HG4628) at the age of 12 years intramuscular, in left arm for covid-19 immunisation; for covid-19 immunisation. The patient's relevant medical history was not reported. Concomitant medication(s) included: FLU [INFLUENZA VACCINE] taken for immunisation, on 30Sep2023 as dose number unknown, single. Vaccination history included: bnt162b2 (Prev dose product=COVID 19,, Prev dose brand=Pfizer,, Prev dose brand unknown=False,, Is bivalent=False,, Prev dose lot number=FK5127,, Prev dose lot unknown=False,, Prev dose administrator route=Intramuscular,, Prev dose administration date=05Nov2021,, Prev dose dose number=1, Expiry : 30Apr2022, Anatomical Location : Arm Left), administration date: 05Nov2021, when the patient was 10-year-old, for COVID-19 Immunization, reaction(s): "Bleeding at injection site", "sore arm", "bruise at injection site"; bnt162b2 (Prev dose product=COVID 19,, Prev dose brand=Pfizer,, Prev dose brand unknown=False,, Is bivalent=False,, Prev dose lot number=FK5127, Prev dose lot unknown=False,, Prev dose administrator route=Intramuscular,, Prev dose administration date=26Nov2021,, Prev dose dose number=2,, Expiry : 30Apr2022, Anatomical Location: Arm Left), administration date: 26Nov2021, when the patient was 10-year-old, for COVID-19 Immunization; bnt162b2 (Prev dose product=COVID 19,, Prev dose brand=Pfizer,, Prev dose brand unknown=False,, Is bivalent=False,, Prev dose lot number=FJ4985,, Prev dose lot unknown=False,, Prev dose administrator route=Intramuscular,, Prev dose administration date=21May2022,, Prev dose dose number=3,), administration date: 21May2022, when the patient was 11-year-old, for COVID-19 Immunization; bnt162b2, bnt162b2 omi ba.4-5 (Dose 4, Route : IM,, Lot number : GJ6738, Anatomical Location : Arm Left), administration date: 20Dec2022, when the patient was 12-year-old, for COVID-19 Immunization, reaction(s): "Sore arm". The following information was reported: BODY TEMPERATURE INCREASED (non-serious) with onset 08Oct2023, outcome "recovering", described as "Day after vaccine, had a 99.5 temperature"; OROPHARYNGEAL PAIN (non-serious) with onset 08Oct2023, outcome "recovering", described as "mildly sore throat"; PAIN IN EXTREMITY (non-serious) with onset 08Oct2023, outcome "recovering", described as "sore arm"; FATIGUE (non-serious) with onset 08Oct2023, outcome "recovering", described as "tired"; PAIN (non-serious), outcome "recovering", described as "very achy". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were not taken as a result of body temperature increased, pain, fatigue, oropharyngeal pain, pain in extremity.  Additional information : Day after vaccine, had a 99.5 temperature, very achy, and tired, mildly sore throat for a short time, sore arm. Got covid prior vaccination. No covid tested post vaccination. No Known allergies. No other medications in two weeks.