migraine headache; muscle aches; flu like symptoms; fatigue; This is a spontaneous report received from a non-contactable reporter(s) (Consumer or other non-HCP) from medical information team for a sponsored program (159558). The reporter is the patient.  A 64-year-old male patient received bnt162b2 (COMIRNATY) (Batch/Lot number: unknown) as dose 1, single and (Batch/Lot number: unknown) as dose 2, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: MIGRAINE (non-serious), outcome "unknown", described as "migraine headache"; MYALGIA (non-serious), outcome "unknown", described as "muscle aches"; INFLUENZA LIKE ILLNESS (non-serious), outcome "unknown", described as "flu like symptoms"; FATIGUE (non-serious), outcome "unknown", described as "fatigue". Therapeutic measures were taken as a result of migraine, myalgia, influenza like illness, fatigue.  Additional information: Caller declined to provide all demographic information except first name per agent (withheld). Caller is a 64-year-old male who received both doses of the Pfizer Covid-19 vaccine and is scheduled to receive the booster dose today 22Oct2021. Caller reports that with both doses of the vaccine he had complaints of a migraine headache (worse with second dose and denies a medical history of migraine headaches), muscle aches, and flu like symptoms (worse with second dose)-denies he had a fever but mentioned fatigue. Caller reports he took Tylenol after receiving the Pfizer Covid-19 vaccine. Caller stated that he read a report from Israel that stated that people over 64 years of age have side effects with the third booster dose that isn't as bad as the first two doses of the Pfizer Covid-19 vaccine. The consumer wants to know if he experienced side effects from the first two doses of the Pfizer Covid-19 vaccine, will he have the same side effects, or will it not be as bad? Referred to HCP and vaccination provider. Spoke from (withheld) Revised: 20Oct2021 under 6.1 Clinical Trials Experience under Table 3 for the first and second dose under Fatigue-Any, Headache-Any, New or worsened muscle pain-Any, as well as Table 7 under Fatigue-Any, Headache-Any, New or worsened muscle pain-Any. Spoke from attached CONS: The CDC states that reactions reported after getting the Pfizer-BioNTech booster shot were like that of the 2-shot primary series. Fatigue and pain at the injection site were the most reported side effects, and overall, most side effects were mild to moderate. However, as with the 2-shot primary series, serious side effects are rare, but may occur. 7. Caller is asking if the booster dose of the Pfizer Covid-19 vaccine the same as the first two doses? The Comirnaty or Pfizer-BioNTech COVID-19 Vaccine booster dose is the same Comirnaty or Pfizer-BioNTech COVID-19 Vaccine that was used for the primary series of Comirnaty or Pfizer-BioNTech COVID-19 Vaccine. Caller is asking why the booster dose of the Pfizer Covid-19 vaccine is called a booster dose? A booster dose is an additional dose of vaccine that is given when the protection (immune response) from a primary vaccine series is likely to have decreased over time. For Comirnaty or the Pfizer-BioNTech COVID-19 Vaccine, this booster dose is given to certain people at least 6 months after completing the initial 2-dose primary vaccine series.1,2. Caller is asking if the booster dose of the Pfizer Covid-19 vaccine would say "booster" on the vial? The Comirnaty or Pfizer-BioNTech COVID-19 Vaccine booster dose is the same Comirnaty or Pfizer-BioNTech COVID-19 Vaccine that was used for the primary series of Comirnaty or Pfizer-BioNTech COVID-19 Vaccine.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.