she developed flu-like symptoms; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient.  A 81 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 14Mar2021 (Batch/Lot number: unknown) at the age of 81 years as dose 1, single for covid-19 immunisation. Family history included: "Alzheimer's" (unspecified if ongoing), notes: Mother had Alzheimer's.; "diabetic" (unspecified if ongoing), notes: Father was diabetic. Concomitant medication(s) included: BABY ASPIRIN. The following information was reported: INFLUENZA LIKE ILLNESS (non-serious) with onset 03Apr2021, outcome "recovering", described as "she developed flu-like symptoms". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: It was reported that, the caller inquired since no one had been willing to give her the 2nd dose of the covid vaccine, 21 days after her 1st dose. The caller stated that, they already reported AE to previous agent. The caller reported that, she received the 1st dose of the Pfizer covid vaccine in Mar2021. Stated that, she was scheduled for the 2nd dose on 04Apr2021, however she developed flu-like symptoms. Stated that, she went to the emergency room where she tested negative for covid. Stated that, she was still on her way to getting better. Stated that, the caller would be turning 82 in the upcoming week; 12Apr2021. Enquired, was that the number that the patient called to reach them. Stated that, the reason for no lot number of Pfizer-BioNTech COVID-19 Vaccine: Other: Lot provided from CDC vaccine record card by caller's son as what he thinks was written: EN6W4 or what caller thought was written: EN6004; they both noted handwriting on card was hard to make out. Stated that, Vaccine Lot, NDC, Expiry date: Unknown, this information was not on the CDC vaccine record card per caller and caller's son. Stated that, the Pfizer-BioNTech COVID-19 Vaccine dosage was temporarily discontinued. Stated that, the consumer on the line who had her first dose of the Pfizer-BioNTech COVID-19 Vaccine on 14Mar2021. Stated that, she came down with flu-like symptoms on 03Apr2021 and ended up missing her second dose of Pfizer-BioNTech COVID-19 Vaccine that was scheduled for 04Apr2021. Stated that, she called pharmacy to reschedule that and they would not schedule another appointment for her because it was past 21 days. She was wondered whether she needed to start the Pfizer-BioNTech COVID-19 Vaccine series over or if she can just reschedule the second dose. (Name withheld) referred caller to her local county health department regarding appointment scheduling. Stated that, the caller verified information provided, she missed dose of second dose of Pfizer-BioNTech COVID-19 Vaccine due to flu-like symptoms, because when she got sick with the flu-like symptoms over the weekend she had to cancel that appointment. Stated that, she took a COVID Rapid test on 03Apr2021 that was negative for COVID and on same date of 03Apr2021 she also took another unknown type of COVID test which was also negative for COVID. Stated that, she was going to her primary care doctor today at 12:00 for just a regular check-up and was going to discuss these events with him. Stated that, she was nervous about it because she wanted to get the second dose of the Pfizer-BioNTech COVID-19 Vaccine, she didn't want it not to work. Stated that, she was online looking on the Pfizer website which said privacy was administering up to 4 weeks, but they recalled that as well. Stated that, she had no reaction to the Pfizer-BioNTech COVID-19 Vaccine; she reported that getting flu-like symptoms like 3 weeks after being administered the first dose of Pfizer-BioNTech COVID-19 Vaccine she didn't think it's likely from the vaccine. Stated that, flu-like symptoms improved; initially the flu-like symptoms hit her hard, but she just had the remnants of the event, described as like a cold at time of this report. Stated that, at this time, she could breathe without decongestants and was not coughing like she was. The caller verified that, other than baby aspirin, there are no concomitant products or other medical conditions or medical history relevant to this report to provide. Stated that, she takes no other medications, she was active and she rarely gets a cold as an adult, it was unusual for her. Stated that, she didn't think she has had a cold in over a year before this event and hasn't had a bad cold in years. She reported that as a child, about once a month she would get a very bad cold, but not as an adult. During the call she mentioned separately that, she would need to put on glasses to see if she could make out the Lot number on the Pfizer-BioNTech COVID-19 Vaccine CDC vaccine record card, she had her son come try to read that information from the card, mentioned that she only had one eye that works.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.