Headache; Extremely tired; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the parent.  A 11 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 08Feb2022 16:30 (Lot number: FL0007) at the age of 11 years as dose 2, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: Bnt162b2 (Lot number: FL0007, Dose no: 1, Anatomical site of vaccination for both patients: Both on the left arm), administration date: 12Jan2022, when the patient was 10 years old, for COVID-19 immunization. The following information was reported: HEADACHE (non-serious) with onset 09Feb2022, outcome "recovering", described as "Headache"; FATIGUE (non-serious) with onset 09Feb2022, outcome "recovering", described as "Extremely tired". Therapeutic measures were taken as a result of headache. Therapeutic measures were not taken as a result of fatigue.  Additional information: This is the second case out of two cases. Reporter (Pfizer employee) stated, Pt work for Pfizer and two younger sons, they just yesterday received the second pediatric COVID vaccine shot and this morning they woke up and they both had headaches and just extremely tired. So, Pt just wanted to report that. They had their second vaccination yesterday and it was around 04:30. In response to further probing for safety report, reporter stated, Pt did not had a call in 5 minutes, Pt dont know and pt did try actually filling it out online but every time pt put in employee ID it would just kick pt out of the window, so thats why pt phoned otherwise pt would have done offline. Reporter was informed that can call back anytime as department operates 24/7. When further confirmed when reporter came to know about the event (headache and tiredness), reporter stated, just this morning (date clarified as 09Feb2022). Product details: LOT: FL0007. When further confirmed if the LOT was same for both the patient, reporter stated, yes, right. Expiration date: Reporter stated, Pt don't see one written on the card, no. When further confirmed if both patients took vaccination from same pharmacy, reporter stated, yes. Indication: Prevention for Covid-19 or covid-19 immunization. When probed if both patients took any treatment for events: Reporter stated, no, well just this morning pt found, Pt gave them just a little of Ibuprofen just to the help with the headache. Still experiencing the event: Reporter stated, Pt would say that was definitely already got better, they still had a slight headache, and they are definitely not as tired (further clarification unknown). When further confirmed if events are improved for both the patient, reporter stated, Yes (further clarification unknown). Anatomical site of vaccination for both patients: Reporter stated, Both on the left arm. Are there any prior vaccinations Reporter stated, yes, they did have the first vaccine dose, both of them on 12Jan2022, first dose of Covid-19 vaccine. LOT for the first vaccine shot: Reporter stated, It was the same, it was FL0007 and there was like initials after but I cannot make it out, pt did not know if it was the initials like of who gave it, like it said or something, pt cannot read it, Pt was not sure, they have FL0007 and after that and this was only for the first dose and then pt thought it was like it looked like initials like (not clear) or something like that but pt really cannot read it. Reporter was informed that report has been filed. Reporter further stated, Pt just wanted to let you know that they both kind of experienced that and they seemed to be already feeling better. This LRN was cross linked with LRN.  Follow-up (11Feb2022): Follow-up attempts are completed. No further information is expected.  No follow-up attempts are possible. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202200239777 Same reporter/drug/AE, different patient