vomiting; headache; fever; decrease of appetite; nausea; sore arm; swelling at the injection site; dizziness; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program (159558). The reporter is the parent.  A 7 year-old male patient received bnt162b2 (BNT162B2), administration date 08Dec2021 (Lot number: FL0007) at the age of 7 years as dose 1, single for covid-19 immunization. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: VOMITING (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "vomiting"; HEADACHE (non-serious) with onset 08Dec2021, outcome "not recovered", described as "headache"; PYREXIA (non-serious) with onset 08Dec2021, outcome "not recovered", described as "fever"; DECREASED APPETITE (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "decrease of appetite"; NAUSEA (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "nausea"; PAIN IN EXTREMITY (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "sore arm"; VACCINATION SITE SWELLING (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "swelling at the injection site"; DIZZINESS (non-serious) with onset 08Dec2021, outcome "recovered" (Dec2021), described as "dizziness". Therapeutic measures were taken as a result of headache, pyrexia.  Additional information: Caller was a consumer calling on behalf of her son who received the Pfizer vaccine pediatric dose 2 days ago on 08Dec2021. The son showed some symptoms such as headache, fever, decrease of appetite, nausea and vomiting on the day of the receiving the vaccine. The symptoms went away and today the son has been experiencing headache and fever again. She wants to know if its normal for the symptoms to go away and return again? The caller's son got the vaccine 2 days ago and is now showing symptoms. The caller is wanting to know how long it will take for the symptoms to be removed. When attempting to clarify the details provided by the transferring agent, the caller states that actually, her son had symptoms which were reported to Pfizer the day of the vaccine. Those symptoms went away. The caller states that she reported the initial symptoms the day of the vaccine in that original report. Her son had a sore arm, swelling at the injection site, dizziness, decreased appetite, nausea, vomiting and also a headache.She states that she treated the fever, and he went to sleep, and he was fine. Clarified that those symptoms, the dizziness, the decreased appetite, nausea, vomiting and headache were what were initially reported. Caller states that her son woke up in the morning and felt great and for 24 hours, he was feeling fine. When she was asked in the report about the symptoms, she stated they asked if the symptoms had gone away. She states that she marked No or unknown because she wasn't quite sure yet. Her son did go 24 hours and felt fine, she kept him home to be able to monitor him. Her son was fine until this morning when he woke up with the similar symptoms. This morning, he woke up having a headache and a fever.Treatment: Caller states she did give him some Tylenol.   Follow-up attempts are completed. No further information is expected.