tired; Headache; injection site is very sore; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team.  A 73 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 25Aug2021 (Batch/Lot number: unknown) at the age of 73 years as dose 2, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (dose 1, administered in left arm), for Covid-19 immunisation.  The following information was reported: VACCINATION SITE PAIN (non-serious) with onset 25Aug2021, outcome "not recovered", described as "injection site is very sore"; FATIGUE (non-serious) with onset 26Aug2021, outcome "unknown", described as "tired"; HEADACHE (non-serious) with onset 26Aug2021, outcome "recovered with sequelae", described as "Headache". Therapeutic measures were taken as a result of headache.  Additional information: Reporter stated that she has 4 grandchildren and the oldest is 13 and she understands that Pfizer is giving the vaccine to children over 12 is that correct. She would like to know if the vaccine was given to her 13 year old would she receive the half the dosage as adults or the same dosage. She stated she is surprised that her 13 year old would receive the same dosage as her. All individuals who received vaccine in the 12 to 15 years of age cohort received the same dose (30 mcg/0.3 mL) as those in the 16 years and older part of the study. Vaccine dosing in studies are routinely based on age, not weight since vaccines are typically administered based on age, not weight. The Pfizer-BioNTech COVID-19 Vaccine is currently only available and recommended as a 30 mcg dose (2 doses; 3 weeks apart) for individuals 12 years of age and older. Reporter stated that both her and her husband received the second dose of the Pfizer COVID vaccine yesterday and she needs to speak to someone to answer a question regarding the booster shot of the Pfizer COVID vaccine. Caller states she knows that Pfizer came out with a booster and she heard that anywhere from 6-8 months after the second dose you should receive the booster and stated after her second shot yesterday the nurse that injected her with the vaccine told her that in a few weeks they would have to get the booster. she said to her husband that she doesn't think that is correct.she received the vaccine at the hospital and had paperwork and it doesn't talk about a booster. She stated are you suppose to receive a booster dose of the Pfizer COVID vaccine 6-8 months after the second dose because she was told by the nurse to get it within weeks. She stated she thought something was strange and her brother in law has cancer so obviously he is going to need the booster readily available. She asked how will her and her husband know that they will need a booster. She stated that her and her husband are good so far except where the injection site is very sore but we expected that and we are very tired but we are always tired. She clarified this was her and her husband's second dose that was administered yesterday, 25Aug2021.  It's actually muscle pain in the injection site area because the injection did go through muscle, its more so pain right in the muscle. Neither her or her husband had any redness or swelling, nothing like that. She stated she told the previous agent that they are always tired anyway, most of the time. So it's very difficult to tell whether the tiredness came from the second shot or what. She states maybe they are a little more tired than usual, but that okay. She explained the tiredness did not start yesterday, but this morning. She clarified her and her husband looked at each other and both said they felt really tired today. But as she stated earlier, they are always tired normally, they just might a little more so today. She mentioned her husband woke up with a headache, too. He had to take 2 Excedrin. She confirms his headache has improved, it went away this morning. She states her husband gets headaches every day, mostly every day he gets headaches. She confirms her husband has not started any new medications within the last 2 weeks, everything has been the same.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-2021893580 same reporter/drug/AE with different patient