This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the parent. A 18 year-old female patient received bnt162b2 (BNT162B2), administration date 28Apr2021 (Batch/Lot number: unknown) at the age of 18 years as dose 2, single for Covid-19 immunisation. Relevant medical history included: "sick", start date: Feb2020 (unspecified if ongoing), notes: technically her daughter didn't have COVID before, but during Feb2020 she may have had it and went to the doctor when she had symptoms but they didn't test people then, just said it could be, it could be that she did have it, she was very sick. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose: 1), administration date: 2021, for Covid-19 immunization. The following information was reported: PYREXIA (non-serious) with onset 2021, outcome "unknown", described as "Fever"; ILLNESS (non-serious) with onset 2021, outcome "unknown", described as "really, really sick"; FEELING COLD (non-serious) with onset 2021, outcome "unknown", described as "freezing with a ton of blankets on"; BLISTER (non-serious) with onset 2021, outcome "unknown", described as "blistering"; NAUSEA (non-serious) with onset 2021, outcome "unknown", described as "nauseous"; PAIN (non-serious) with onset 2021, outcome "unknown", described as "body ache"; CHILLS (non-serious) with onset 2021, outcome "unknown", described as "chills". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pyrexia, illness, feeling cold, blister, nausea, pain, chills. Additional information: Caller was not sure which one of her daughter's symptom was lingering. Caller stated that one of them is body ache, fever (102), nausea, chills. Caller confirmed that she was just told a few days ago that her daughter has side effects for months but didn't ask what they were. She added that her fever subsided after 6 days it was the other side effect she didn't know after 6 days. Caller mentioned that her daughter, months after the vaccination she was nauseous, has high fever and chills. Caller described that "she would have blanket upon blanket on her, she was freezing but if you touch her she was very hot then after two days if you look at her you would think she has blisters on her face, she was very latchy. She looked like she has blister on her, they weren't blisters but if you look at her she look like her skin tone and that was when she has the high fever that was from 6 days. Her daughter took Tylenol and Ibuprofen and did what they advised her. Caller asked, if her daughter might have had Covid-19 infection prior to receiving her Covid-19 vaccine would there be potential adverse reaction in regards to her antibody response. Caller said that her daughter ended up getting really, really sick and not just for a few or 4 days, which she was told could last 2-4 days, it was actually 6 days and her daughter has said she has been having ongoing problems since then. She said her daughter didn't tell her what those ongoing problems were when they were in conversation recently. She said when her daughter was really, really sick she was in bed with 102 degree Fahrenheit temperature but was freezing with a ton of blankets on and when you touched her she was very hot. She said after a few days when you would look at her face you would think she had blistering on her face. She said her daughter was nauseous, and she doesn't know about body aches since she doesn't know if her daughter would have recognized she had them since she was so sick. Caller said she called the nurse from the clinic that she got the vaccine from every day and they just said it was ok, it is just side effects, and would tell her 4 days, and on day 5 to keep an eye on her and at 6 days. Caller said in hindsight she shouldn't have accepted that, and now her daughter doesn't want to get a booster dose, which she doesn't blame her, but she goes to college so she would want her to get a booster but she could have a reaction again. Caller said when she spoke to her daughter a few days ago she wasn't aware that she had had lingering side effects, though they don't know that it was from the vaccine, but she has had them ever since she got her second vaccine. She said her daughter got her first dose a month before that. Caller said technically her daughter didn't have COVID before, but during Feb2020 she may have had it and went to the doctor when she had symptoms but they didn't test people then, just said it could be, it could be that she did have it, she was very sick. Caller said 3 days later her daughter was laid up in bed for like six days. She said for treatment she did whatever the doctor told her, gave her Tylenol maybe and gave her sometimes Ibuprofen, she doesn't remember, definitely Tylenol to bring down the fever and had her take cold showers. Caller said for the body aches she had other lingering side effects for months after, but she doesn't know what those are. She said she doesn't know when her daughter feeling nauseous began, for treatment there was none, she would just not eat, and that got better. The lot/batch number is not available despite the follow-up attempts made. Follow-up attempts completed. No further information is expected.