her arm was hurting; chills; joints are achy; Tiredness; flu-like symptoms; achiness; cold; low temp usually 99.7 and temp 98; This is a spontaneous report from a contactable consumer (patient). A 77-years-old female patient received second dose of bnt162b2 (BNT162B2, PFIZER-BIONTECH COVID-19 VACCINE, formulation: solution for injection, batch/lot number: EN6200, expiration date: not reported) (age at the time of vaccination was 77 years) via an unspecified route of administration, administered in Arm Left on 23Feb2021 as DOSE 2, SINGLE for COVID-19 immunisation. The patient's medical history included chronic obstructive pulmonary disease, emphysema, atrial fibrillation from an unknown date and unknown if ongoing and spleen operation and the patient lost her spleen when she was 26 years old, this causes her immune system to be compromised. There were no concomitant medications reported. The patient received first dose of bnt162b2 (BNT162B2, PFIZER-BIONTECH COVID-19 VACCINE, formulation: solution for injection, batch/lot number: EN5318, expiration date: May2021) (age at the time of vaccination was 77 years) via an unspecified route of administration, administered in upper left arm on 02Feb2021 as DOSE 1, SINGLE for COVID-19 immunisation and It was reported that the caller seems to be having a reaction, after the first dose she was real tired and slept for the first day. The caller showed these symptoms for the first day and for half of the second day after the first dose. The caller got the second shot Tuesday and did not show side effects until yesterday, she got really achy, cold, flu like symptoms, chills, low temp usually 99.7 and temp 98, her arm was hurting where she received the vaccine, and all of her joints are achy. The first time the side effects happened within 2.5 hours after the first shot. She felt really out of it, really tired, slept for 4 hours and got up and felt very weak, very tired and that lasted during the night. The patient got up the next day and felt the same way and decided to stay up because she hated the way she felt when she went to bed. The patient mentioned that between 5 and 6 she felt like herself and bam that was it. The patient says she goes in and out of it, feels great then boom she goes right back into it. She woke up and felt fantastic and within a half hour she was back in bed. It was reported that after the patient had taken the second dose of the Pfizer COVID-19 vaccine, she had flu-like symptoms. It did not occur right away. It started yesterday (24Feb2021) and carried over until today (25Feb2021). She described her adverse events as intermittent she would feel her AEs then she would go to another room feeling fine then she would have her AEs again. She would like to know if there are other reports of intermittent flu-like symptoms and she wanted to know the duration of her adverse event. She said that she felt the achiness, the tiredness, the chills, the mild fever (usually she is 97F but she was reading 98F). She's had the flu, she knows what it feels like, her arm even hurts to comb her hair, everything hurts. She said she was taking Tylenol. The caller was unable to verify if the events are improved, worsened, or persisting, stating they are the same. When it does improve she feels like herself and when it goes back to the symptoms, it does not feel like its any worse or any better. The patient underwent lab tests and procedures which included blood test: normal body temperature: 97 Fahrenheit, body temperature: 98 Fahrenheit, body temperature: 99.7 Fahrenheit. The outcome of the events was unknown.  No follow-up attempts are possible. No further information was expected.