A  female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection), dose 1 via an unspecified route of administration, administered in Arm Left (left shoulder muscle) on 26Mar2021 09:00 (Batch/Lot Number: ER8727; Expiration Date: 31Jul2021) as SINGLE DOSE, dose 2 via an unspecified route of administration, administered in Arm Left (left shoulder muscle) on 19Apr2021 07:35 (Batch/Lot Number: EW0158; Expiration Date: 31Jul2021) as SINGLE DOSE for covid-19 immunisation. Medical history included pneumonia. There were no concomitant medications. The patient experienced diarrhea/the diarrhea was kind getting annoying (non-serious) on an unspecified date in Apr2021. Question: Please see attached source document from DSU; She received the first dose of the covid vaccine on 26Mar2021. She received the second dose of the covid vaccine on 19Apr2021. She was reading the literature about the covid vaccine and saw diarrhea as a symptom. She has been experiencing diarrhea and was calling to report about it. She was asking how much longer she can expect the diarrhea to last. The diarrhea was kind getting annoying. Callback details: 28Apr2021 Was not able to speak to caller. Successfully left a voicemail. Response: See doc attached for proposed response. Additional Context: She was calling about the Pfizer covid 19 vaccine. Her doctor did not even know about her diarrhea. She did not call her doctor about her diarrhea. She always saw television ads saying to call her physician about everything but her physician was busy. Her diarrhea was not debilitating only annoying. She received the second dose of the covid vaccine on 19Apr2021. She gave Pfizer permission to contact her primary care physician with any follow up questions but her physician probably will not have any information. Address, City, State, ZIP code, Email address: Not provided when queried. She was asking how much longer she can expect the diarrhea to last. The diarrhea was kind getting annoying. She tried to call Pfizer the other day, but there were 14 callers ahead of her so she hung up. Diarrhea: Began about two weeks after she received the first dose of the covid vaccine. Her diarrhea was ongoing, it has never really let up and is about the same. Indication: Basically it seemed like the right thing to do at her age. It seemed like a good idea. If she had to go through this diarrhea again, she might not be so willing to get the covid vaccine. She was not looking forward to possibly getting a booster at six months or one year if she ends up needing too. She probably would not get a booster if it means that she will have diarrhea like this again. First dose administered on 26Mar2021 about 9:00 AM in left shoulder muscle. Lot number: ER8727. NDC: Unknown, Expiry date: 31Jul2021. Second dose administered on 19Apr2021 at 7:35 AM in left shoulder muscle. Lot number: EW0158, NDC: Unknown, Expiry date: 31Jul2021. She was pretty healthy. She had pneumonia back about ten years ago. She had never received a pneumonia vaccine. Her doctor asked her every year, and she always said no. She decided with the severity of covid, she would be better off to get the covid vaccine. Vaccine Supplemental Form:  Vaccination Facility Type: Hospital. Vaccine Administered at Military Facility No. Country: USA. She felt more comfortable going to her local hospital to get the covid vaccine. (Name) Hospital was very professional. She did not think it was necessary to travel to the city to get the covid vaccine. She only had to travel 2 miles to get to (Name) Hospital. History of all previous immunization with the Pfizer vaccine: See above. Additional Vaccines Administered on Same Date of the Pfizer Suspect: None. Adverse Event (AE) Details: See above. Did any AE(s) require a visit to: Emergency Room? No. Physician Office No. Prior Vaccinations (within 4 weeks): None. AE(s) following prior vaccinations: Not provided. Family Medical History Relevant to AE(s): None. She was asking if USMI can call her back. Her hand was getting tired from holding the phone. PSCC Communication: The caller was provided with USMIs phone number# option 3 and hours of operation of Monday through Friday, 8AM to 8PM Saturday and Sunday 9AM to 3PM for COVID-19 vaccine inquiries prior to attempted warm transfer. Unable to warm transfer due to high call volume. Caller did not agree to cold transfer to USMI. Caller requested USMI to call her back. Is there a product complaint to report: No. Is there a medical information request? Yes: Please describe the medical information request: She began having diarrhea about two weeks after she received the first dose of the covid vaccine. She was asking how much longer she can expect the diarrhea to last. Is this an Other report: No. The outcome of event was not recovered.    No follow-up attempts are needed. No further information is expected.