Chills; She was feeling achy and fluish; She was feeling achy and fluish; Swelling of left foot/Swelling of right foot; Headache; Fatigue/felt tired; dizziness/Little dizzy; not feeling too good /Feeling hot/like a low grade fever/fever; This is a spontaneous report received from a contactable consumer (patient). A 61-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, batch/lot number and expiration date not provided), via an unspecified route of administration, on 02Apr2021 (at the age of 61-year-old), at single dose, for COVID-19 immunization. Medical history and concomitant medications were not reported. On 02Apr2021, patient had headache, fatigue/felt tired, dizziness/little dizzy, and not feeling too good /Feeling hot/like a low grade fever/fever. She reported that to her doctor. On 03Apr2021, patient had swelling of left foot. On 11Apr2021, patient had swelling of right foot. On unknown date, patient experienced chills, lasted for a quarter of a day, "Friday". On unknown date, patient was feeling achy and fluish. Patient stated when she took her first dose she woke up and had slight swelling of her left foot (03Apr2021). She reported her foot would go and would elevate it. She then experienced it again on 08Apr2021, 09Apr2021, and 12Apr2021. She also had swelling of her right foot on 11Apr2021. She was wondering if she should get the second dose of the vaccine, scheduled on 23Apr2021. The swelling was mostly in her left foot and it started day after vaccine. With elevation her left foot was better. It went down for a few days and she didn't have any swelling, then it started back again on 11Apr2021 and 12Apr2021, and it was "Saturday" or something then she had it again. She kept it elevated and it would go down some and come back. Her right foot had gone down but her left was still up. Patient was a little dizzy on 02Apr2021 right after the injection. Saturday she was dizzy and then the fatigue set in and that was Saturday and Sunday. The fatigue started leaving. It was worse and then started feeling better. Patient had headache on 02Apr2021. The headache started that afternoon with a full effect the evening of 02Apr2021, 03Apr2021 and the first part of Thursday she felt it then as well. She wasn't so bad Monday as far as the fatigue. She didn't have the fever on Sunday. As far as the fatigue clarified it started that evening of the vaccine. The only thing that stayed was the headache and fatigue. Everything else felt pretty good right after and she was mostly her normal self that Wednesday. Other than that as far as Wednesday she was a little bit fatigued. She tried going to work and worked through it. She was able to sit down here and there when she felt bad. She went to work Saturday and Sunday. It was a lot better. She told her daughter she was not feeling too good and went and laid down and she started feeling hot. It was like, not how a bad fever felt, but like a low grade fever. That evening she had the hotness, maybe later like 1800 or 1900, up until Saturday. It wasn't all day Saturday. It was not like a bad fever, just hot. It went away. She was feeling achy and flu-ish. She laid down and went to sleep and tried to get up the next morning. She took something like paracetamol( TYLENOL) and called the doctor Friday. They told her to use fever reducers because of the fever. When she went in to see the doctor on Tuesday she could do a little with the fatigue and after that would do a little bit and start to felt tired. She would go back and lay back down. She took 3 days off. Other than that it was like having the flu or something. She has had flu shots and had a reaction to it and it would go as time went on. She asked what's going on with this. She had the flu shot 3 different times and only one time had a reaction. She never had swelling or anything, that's what she was concerned about. The reaction to the flu shot was years ago, and she didn't have a foot reaction. The outcome of the event "swelling of feet", "fatigue" was recovering; of other events was unknown.   No follow-up attempts are possible; information about lot/batch number cannot be obtained.