Chills; Fever; Very bad headache; so much tired that I had to go to the bed; I was just feeling so lousy; side effects to both the second shot and both boosters; flu like symptoms; This is a spontaneous report received from a non-contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A patient (no qualifiers provided) received BNT162b2 (BNT162B2), as dose 2, single (Batch/Lot number: unknown), on 30Sep2021 as dose 3 (booster), single (Batch/Lot number: unknown) and as dose 4 (booster), single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: Covid-19 vaccine (Dose 1), for COVID-19 Immunization. The following information was reported: CHILLS (non-serious), outcome "recovered"; PYREXIA (non-serious), outcome "recovered", described as "Fever"; HEADACHE (non-serious), outcome "recovered", described as "Very bad headache"; FATIGUE (non-serious), outcome "unknown", described as "so much tired that I had to go to the bed; I was just feeling so lousy"; INFLUENZA LIKE ILLNESS (non-serious), outcome "unknown", described as "side effects to both the second shot and both boosters; flu like symptoms". Therapeutic measures were taken as a result of chills, pyrexia, headache, fatigue, influenza like illness.  Additional information: Consumer further stated, "It is to let Pfizer know I have side effects to both the second shot and both boosters, I just got the second booster on Thursday and I had chills, fever, very bad headache, everything left for about probably 36 hours and then dissipated but I had the same side effects with both the second injection as well as both boosters and I am, you know so much tired that you know I had to go to the bed you know what it means I was just feeling so lousy, I kept taking Tylenol." LOT# Consumer stated, "I do not what the LOT#, was that (Four digit number given), does that makes sense? Yes, Pfizer and then it says Pfizer and it looks like I do not know what is it, it was scribbled but it was what I see was left four digit because it was scribbled (Four digit number given) so I do not have that (voice not clear), it was that (name) your account. Consumer stated, "The only number on the record card it says Pfizer and then it looks like it is very hard (Number given) (further clarification unknown) that is the only thing that was mentioned there." Date of Vaccination: Consumer stated, "07Apr (further not clarified), now I also have, I can give you the dates of the other two because I had same reaction to both the first booster, as well as the second dose of the Pfizer. 30Sep2021 (first booster shot) the LOT# you want? I gave you the date 30Sep, 30Sep2021, that is the first booster, (Lot number given) (LOT# for first booster),well actually you know what the way it was written here, let me give you the alternate number it also could be (Lot number given), looks like 17, you know it's look like either an A or 17 the way it was written I did not realize, you know, what LOT Number, whether it is 17 or A." (Further clarifications unknown). Concern: Consumer stated, "I just told you I had flu like symptoms after both boosters and after the second dose."  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.