little bit of fever and chills at night; little bit of fever and chills at night; This is a spontaneous report from a contactable consumer or other non hcp (parent). This consumer reported events for 3 patients. This is the 3rd of 3 reports. This consumer (mother) reported for a patient (kid). A patient of unspecified age and gender received BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Batch/Lot number was not reported), via an un-specified route of administration on an unspecified date at dose number unknown, single for covid-19 immunisation. Medical history and concomitant medications were not reported. On an unspecified date the patient experienced little bit of fever and chills at night. Reporter stated, So I was, I have a, I have two kids, and one of them is, one is 16, and they take the vaccine and the youngest one, she is fine but the 16 years old one, after the first vaccine she having a problem with vaccine, we just think this is because of the vaccine but after the second one it get worse. Anyway. I find to all my registered her, what is the site that, you been, with that they give up some, we register in there. I put myself in and I put all of my information give to her. I couldn't have no information but she have, I looked the paper and if you have side effects, you can call this number and I just called. Medical enquiry: Reporter stated, No. right now. I took her to the doctor office so they, the first time, when I took her, he thinks it allergy, they don't think over. They prescribed her the Zyrtec and Benadryl (treatment) one in the morning and one at night so, she start taking that. Her body, was the rash in her legs, by the knee and all joints is given a pain and she have it on the back, her back is all rash, her legs all rash and her face is just swollen. So the rash is stopped right away but her face is still swollen. Treatment was being given to the patient: Reporter stated, Yes. I take her in doctor's office. doctor prescribed that if she didn't feel better, I took her again, her doctor now, they are take her blood to see what's wrong because they cannot really tell me, what can be better. Right now they are doing, tomorrow I have to took her with her blood work. she completely normal kid. Once after this vaccine just everything has become like another world. When probed if having any question regarding the adverse event: Reporter stated, I mean right now, I don't know what to ask, I don't what to do, to be honest with. I just, I don't know, I just don't know (not confirm hence MI was not made). If you have concern, you have to call them so I said Okay let me call you. When probed for age at the time of adverse event: Reporter stated, Yeah, after the first one, after like, she took the first one. Reporter stated the weight: She loose 8 pounds within two weeks because of after, she fell sick. Reporter type: Reporter stated, No, I am her mother. When probed for lab test: Reporter stated, No, she didn't, not yet. We going to go tomorrow. No, because two weeks ago, the doctor said, it's allergy, then after he gave her the medicine. It did not work so that's why they going to do blood work tomorrow because I took her again. When probed for the treatment: Reporter stated, Yes. The doctor prescribed her Zyrtec and Benadryl. Doses of the treatment: Reporter stated, Zyrtec one in the morning and Benadryl one in the night but she took like 3 days and it gave her headache (Further not clarify hence not captured as event) so she start taking it the other, she doesn't take it. Date of first shot: 24April2021. LOT for the first shot: EW0172. Date of Second shot: 15May2021. LOT for the second shot: EW0168. If the other patient facing any problem with the vaccine: Reporter stated, No. she is fine. I am fine. Date of adverse event: Reporter stated, Right after her first vaccine, I think after like about a week after she start facing pain in her joints. The pain is just after the first vaccine and it gets worse, after the second one. 2-3 weeks before I took her to the doctor she didn't feel better so I took her again for blood work because I never had this. I have it like a little bit fever, and chills at night. It happened to me. It happened to youngest one. I thought like that because I never expected. The split case is identified after the call hence no further relevant information for the patients could be probed. Limited information was available over the call. This case is cross linked with two other cases. Outcome of the events was resolved on an unspecified date.