Woke up soaking wet with sweats; feels very tired; Weakness; no appetite; Cold; Pfizer Covid vaccine, new booster, dose 5; chills so bad she couldn't sleep all night; She was shaking in bed under the covers; whole body achy; Sick; she couldn't sleep all night; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 78-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 11Oct2022 at 13:00 as dose 5 (booster), single (Lot number: 6H9703) at the age of 78 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "COPD" (unspecified if ongoing); "high blood pressure" (unspecified if ongoing), notes: high blood pressure; "cholesterol" (unspecified if ongoing). Concomitant medication(s) included: WIXELA INHUB taken for chronic obstructive pulmonary disease; INFLUENZA VACCINE taken for immunisation, on 04Oct2022 as dose number unknown, single. Vaccination history included: BNT162b2 (Dose: 1 , Lot: EN53190 (print is very small and hard to read), Had absolutely no ill effects except a little soreness with the initial shot part.), administration date: 25Jan2021, when the patient was 76-year-old, for COVID-19 immunization, reaction(s): "Little soreness"; BNT162b2 (Dose: 2, Lot looks like EL9266, Had absolutely no ill effects except a little soreness with the initial shot part.), administration date: 15Feb2021, when the patient was 76-year-old, for COVID-19 immunization, reaction(s): "Little soreness"; BNT162b2 (Dose: 3, 1st booster, Lot looks like 330308D or 3303080), administration date: 26Nov2021, when the patient was 77-year-old, for COVID-19 immunization; BNT162b2 (Dose: 4, 2nd booster, Lot looks like FJ4989), administration date: 27Apr2022, when the patient was 77-year-old, for COVID-19 immunization.  The following information was reported: TREMOR (non-serious) with onset 11Oct2022, outcome "unknown", described as "She was shaking in bed under the covers"; ILLNESS (non-serious) with onset 11Oct2022, outcome "unknown", described as "Sick"; CHILLS (non-serious) with onset 11Oct2022, outcome "recovered" (12Oct2022), described as "chills so bad she couldn't sleep all night"; SLEEP DISORDER (non-serious) with onset 11Oct2022, outcome "unknown", described as "she couldn't sleep all night"; PAIN (non-serious) with onset 11Oct2022, outcome "recovering", described as "whole body achy"; INCORRECT DOSE ADMINISTERED (non-serious) with onset 11Oct2022 at 13:00, outcome "unknown", described as "Pfizer Covid vaccine, new booster, dose 5"; NASOPHARYNGITIS (non-serious) with onset 12Oct2022, outcome "unknown", described as "Cold"; ASTHENIA (non-serious) with onset 12Oct2022, outcome "unknown", described as "Weakness"; DECREASED APPETITE (non-serious) with onset 12Oct2022, outcome "not recovered", described as "no appetite"; HYPERHIDROSIS (non-serious) with onset 13Oct2022, outcome "not recovered", described as "Woke up soaking wet with sweats"; FATIGUE (non-serious) with onset 13Oct2022, outcome "not recovered", described as "feels very tired". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of chills, tremor, pain, asthenia, fatigue, illness, nasopharyngitis.  Additional information: The patient had no family medical history and relevant tests. The patient was not administered additional vaccine on same date of the Pfizer Suspect and got her flu shot the week before on Tuesday. The patient had no prior vaccinations and AE(s) following prior vaccinations. It was reported that the patient take a cholesterol pill and as of recently she had to start a high blood pressure medication, it's not that high but they want to make sure. On Tuesday she had the new shot, the 5th, the new booster shot. With the other 4 she had within the last year she had absolutely no ill effects except a little soreness with the initial shot part. This time on Tuesday, oh my God, she was so sick and was fine after the shot and upon going to bed about 11-11:30 she had chills so bad she couldn't sleep all night. She was shaking in bed under the covers, unbelievable and couldn't sleep all night. She took Tylenol and it was whole body achy, like she was hit by a truck, it was terrible. This started at the same time as chills that evening. During that day she had been fine. The next day the chills subsided but she had weakness, like she was very sick with a cold. She had no appetite whatsoever; that was the same right now. She did not have much of an appetite anyway. She will force herself to eat today. Yesterday she didn't feel like eating at all with the chills and went to bed last night and took Tylenol in case. She was still very, very achy. The patient woke up soaking wet with sweats. Her hair, pillow, nightgown were soaked, it was like menopause again but worse. She was drenched like she was just out of the shower. It went away as soon as she was out of bed, her hair was still wet. She was up now and feeling ok now. Body was still a little achy, that's it hopefully that's it. The patient wanted to let us know the 5th shot gave her this very bad side effects she did not have with the previous 4 Pfizer shots. Hopefully did have any more side effects. Hoping she feel better today. Just felt very tired like she wanted to go back to bed and sleep awhile. Stated she was always tired but when you go through something like that the body need to rest.