He experienced feeling very sick; extremely tired; feel like sleeping all day; massive body ache; slight flu like symptoms; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 47 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 12Apr2021 12:30 (Batch/Lot number: unknown) at the age of 47 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "asthmatic" (unspecified if ongoing), notes: diagnosed a long time ago, probably 20 years ago. The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (FIRST DOSE), for COVID-19 immunization. The following information was reported: MALAISE (non-serious) with onset 13Apr2021, outcome "not recovered", described as "He experienced feeling very sick"; FATIGUE (non-serious) with onset 13Apr2021, outcome "not recovered", described as "extremely tired"; SOMNOLENCE (non-serious) with onset 13Apr2021, outcome "not recovered", described as "feel like sleeping all day"; PAIN (non-serious) with onset 13Apr2021, outcome "not recovered", described as "massive body ache"; INFLUENZA LIKE ILLNESS (non-serious) with onset 13Apr2021, outcome "not recovered", described as "slight flu like symptoms".  Additional information: Caller reports that yesterday 12Apr2021 he took the second Pfizer COVID vaccine. Caller stated that since this morning he has had a very bad body ache and feels extremely tired. Caller states that he doesn't feel like getting up, caller states he feels like he has some kind of flu has struck him, he has been sleeping all day. Caller states that he has no temperature, cold or cough, no asthma symptoms just body ache and tiredness of lifetime. He wants to know if this was normal. Stated he got his second dose exactly three weeks later. Caller stated that he does not have any rashes, soreness. He confirmed the events were staying the same. Commented it was worse already. Caller stated he has no rash, no cold, no cough just caller just doesn't feel very well. Caller also mentioned he feels like something else was happening to him. He contacted the (name) and this was what everyone else was experiencing. Caller stated that was so bad that he took a day off from work and he never takes the day off, so it has to be bad. Caller has not been to the doctor, thought if it was the first shot he would go to the doctor. Caller states that he usually gets up at 8:00 AM, today he got up at 9:30 AM, sent a message to his boss and went back to sleep. Caller wanted to know if this was a Pfizer COVID vaccine reaction or side effect. Adverse event did not result in physician office visit and not provided details for Emergency room visit. History of all previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available). Additional Administered Vaccines and Prior Vaccinations (within 4 weeks) was not provided. Family Medical History Relevant to AE(s) and Relevant Tests was not provided.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.