he did not feel well; he then got tested for covid and tested positive for covid; he just did not feel like himself and still thought it was from the shot and he was not 100 percent it seemed; he did not want to eat but could smell and taste food but did not want to eat it/ loss of appetite; he started feeling drowsy/ kept falling asleep/ dozing off; the next day started feeling very tired/ tiredness; lost about 12 pounds; This is a spontaneous report from a contactable consumer (patient). A 76-year-old male patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration, on 18Feb2021 10:30 (Batch/Lot Number: EN5318) at the age of 76-years-old as first dose, single in the left arm for COVID-19 immunisation.  Medical history included acute pancreatitis, diagnosed about 10 years ago (2011) and cirrhosis liver, diagnosed maybe 7-8 years ago. The patient's concomitant medications were not reported. The patient previously took Hepatitis A vaccine on 03Feb2021 and has no dosage, lot number, expiry date to provide. The patient stated that he was calling about the Pfizer COVID vaccine and stated that he had the 1st dose on 18Feb2021 10:30 and did not get the 2nd dose; stated that he had the first dose and the next day (19Feb2021) started feeling very tired and thought it was a result of the shot and it lasted until the following Friday, 26Feb2021 and he then got tested for covid and tested positive for covid on Friday 26Feb2021. The patient stated that his healthcare professional (HCP) sent him for an infusion that day and hooked him up to the infusion and said it would help him get better faster and the patient does not know the name, dosage, lot, expiry date of the infusion and has none of that information to provide. The patient stated that he was told he can't get the 2nd shot for 90 days after the infusion and heard that he could get it and the infusion center told him he would have to start all over again with the 1st shot of the Pfizer COVID Vaccine and he does not know but has heard different stories and some say he can get the 2nd dose of the vaccine and others say no he has to wait 90 days after the infusion and he called the facility and the HCP said he would have to wait 90 days after the infusion; states the facility said to wait 90 days and he was told they are going by the agency. The patient stated that his patient card for the Pfizer COVID Vaccine says he was supposed to go back for the 2nd dose on 11Mar2021. The patient also stated that when he went home after the Pfizer COVID Vaccine 1st dose he felt fine and got up and went to work and was fine and then noticed at work he started feeling drowsy (on 19Feb2021) and usually works in the street outside but was in the office that day; patient stated that he started dozing off and then the next day on Saturday (20Feb2021), he just did not feel like himself and still thought it was from the shot and he was not 100 percent it seemed and he went to go to work the following Monday and Tuesday and Wednesday and kept falling asleep in his office and then it was finally Friday. The patient also stated that he did not want to eat but could smell and taste food but did not want to eat it on 19Feb2021 and the following week he took the whole week off of work and lost about 12 pounds; he also stated that the tiredness lasted into the following week and the loss of appetite, dozing off is not ongoing and lasted probably a good three weeks total until he started feeling from the day after the vaccine on 19Feb2021 for three weeks and then he started feeling more like himself. The patient stated that he was fine up until he did not feel well and it was not probably from the vaccine but was just a coincidence the next day when he started feeling tired and he does not know the results from the vaccine but got worse and worse and could not function normally like he is supposed to and just wanted to lay down. The patient stated that he did not have treatment for the reported events. The outcome of the event "the next day started feeling very tired/ tiredness" was recovered on 26Feb2021, for events: decreased appetite and somnolence was recovered on an unspecified date. The outcome of all other events was unknown.  No follow-up attempts are needed; information about lot/batch number cannot be obtained.