fever/orally temperature was 100.8 degrees Fahrenheit; severe body aches; chills/heater on 80 degrees because she had the chills so bad; pains like joint inflammation; pains like joint inflammation; This is a spontaneous report from a contactable consumer (patient) via Medical Information Team. A 52-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection) via an unspecified route of administration high on left shoulder on 08Jul2021 08:45 AM (Lot number: EW0150, NDC number: Unknown, Expiry Date: Unknown) (at the age of 52-year-old) as single dose for Covid-19 immunisation. The patient took the Pfizer Covid vaccine because as she could not leave the house without being vaccinated, she got a new job. When probing for indication of the Covid 19 vaccine she reported she started a new job. She was laid off on 15Jul2021 due to the Covid 19 virus and this job literally fell in her lap. She talked to her new employer on Wednesday, and he hired her on Thursday and she thought she could not leave the house without being vaccinated. She had been quarantining at home. The patient's medical history included mononucleosis from 07Jul2021, Covid-19 from May2021, hypertension and attention deficit hyperactivity disorder (ADHD). Concomitant medications included ongoing amfetamine aspartate/amfetamine sulfate/dexamfetamine saccharate/dexamfetamine sulfate (ADDERALL XR) and ongoing hydrochlorothiazide/lisinopril (LISINOPRIL HCTZ, 12.5 mg/20 mg). When probing medical history and concomitant medications she reported she had not taken her Adderall in a week or so because she ran out. Her last refill was 05May2021 and she did not want to take her prescription medications while she had Covid and she did not want to have to go anywhere while quarantining. On 09Jul2021, the patient experienced severe body aches, pains like joint inflammation, fever, temperature today orally is 100.8 degrees Fahrenheit, chills, had her heater on 80 degrees because she had the chills so bad, she was still out of breath, could not go up and down the stairs because she was so winded. She was calling about the Pfizer Covid vaccine. She had her first dose yesterday on 08Jul2021. The patient stated that she was seen by her doctor on 07Jul2021, and now had been diagnosed with Mononucleosis. Caller reported her symptoms as being fever and body aches. She was feeling the same way as felt when had Covid back in May2021 since she received the Pfizer Covid vaccine, she was infectious to her family and children, did not need to isolate. The Pfizer-BioNTech COVID-19 Vaccine did not contain SARS-CoV-2 (the virus that causes COVID-19) and could not give COVID-19. Spoke from DOC-0063577 that the side effects that experiencing were consistent with what had been reported. Reporter seriousness for the events was unspecified. She had gone to her doctor on Wednesday, 07Jul2021 because she was not feeling well. She had the Covid 19 virus in May2021 and is still experiencing extreme fatigue and extreme, severe body aches. Her doctor did some bloodwork on Wednesday, 07Jul2021 and tested her for mononucleosis. Today 09Jul2021, she received the results of her mononucleosis test and she is positive for mononucleosis. Yesterday, 08Jul2021 she received her first Covid 19 vaccine and she was told to expect side effects because she had the Covid 19 virus in May2021 and that had been in the past 60 days. Today she was having severe body aches and pains like joint inflammation and a fever. She was told she might have a fever and now that she had a fever, wanted to know whether she was at risk of infecting anyone else (contagious). She was concerned because she was supposed to babysit her granddaughter in weekend. To clarify she went to her doctor on Wednesday 07Jul2021 because she was still having symptoms from the Covid 19 virus she had in May2021. She had not to go to the doctor or emergency room regarding symptoms since receiving her first dose of the Covid 19 virus on 08Jul2021. She provided the following information historically from her encounter in May2021 with the Covid 19 virus. She read that some people were still having Covid 19 symptoms even after testing negative for the Covid 19 virus. The body aches she had been having were incredibly painful. She was tested for the Covid 19 virus in May2021 on a Friday but her test was negative. She could not remember the exact dates but had the prescription bottle of a medication she received during that time dated 07May2021. She was told to quarantine with her husband because they were together a lot. The same day that she tested negative for the Covid 19 virus her husband tested positive. She was tested again for the Covid 19 virus on that Monday and tested negative. But on that same Monday she developed some coughing and the next day on Tuesday she had a fever. Later that week she still had the fever and then she experienced fatigue and on Thursday and Friday she had body aches that were so incredibly painful that she could not even get out of bed to use the restroom. At that point she found it interesting that she was in so much pain. Her doctor prescribed her Acetaminophen-Cod3 300 mg on 07May2021. When she started taking that medication her fever started breaking. Her fever had reached 102 degrees Fahrenheit. The body aches and the joint pain during that time was incredible unbearable. Her fever was breaking, and she was sweating and just had a low grade fever. She reported her temperature today orally is 100.8 degrees Fahrenheit. She was still out of breath since having the Covid 19 virus. Before she had the Covid 19 virus she was extremely active with jogging, bike riding, and gardening. Now she could not go up and down the stairs because she was so winded. When probing for information regarding her symptoms after receiving the Covid 19 vaccine she reported she was back to having the severe body aches, fever and chills. When she went to get her medications, she had her heater on 80 degrees because she had the chills so bad. No PQC present.  Follow-up attempts are needed. Further information is requested.