Muscles has been locking up/Whole body just locking up; Stomach hurt and sides hurt; Could not move her head for two weeks; Can't sit to do anything; Sits in her wheelchair to keep her from falling; Feeling weak for a week after receiving the vaccine; Joint lock; In pain; Had a feeling of something crawling under the skin; Muscle pain/ whole body hurts ( legs, hands, shoulders, etc.).; Joint pain/Joint pain all over my body/Joint pain in ankles/Joints hurts; returned call from Safety; This spontaneous case was reported by a consumer and describes the occurrence of MUSCULOSKELETAL STIFFNESS (Muscles has been locking up/Whole body just locking up), ABDOMINAL PAIN UPPER (Stomach hurt and sides hurt), MOBILITY DECREASED (Could not move her head for two weeks), SITTING DISABILITY (Can't sit to do anything) and WHEELCHAIR USER (Sits in her wheelchair to keep her from falling) in a 76-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 026C21A and 047B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Latex allergy, Seafood allergy, Fruit allergy (Oranges), Drug allergy (Steroids), Drug allergy (Stalin), Diabetes and Seizure. Concomitant products included METFORMIN for Diabetes, PRIMIDONE (MYSOLINE) for an unknown indication.   On 04-May-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 01-Jun-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 27-Jul-2021, the patient experienced UNEVALUABLE EVENT (returned call from Safety). On an unknown date, the patient experienced MUSCULOSKELETAL STIFFNESS (Muscles has been locking up/Whole body just locking up), ABDOMINAL PAIN UPPER (Stomach hurt and sides hurt), MOBILITY DECREASED (Could not move her head for two weeks), SITTING DISABILITY (Can't sit to do anything), WHEELCHAIR USER (Sits in her wheelchair to keep her from falling), ASTHENIA (Feeling weak for a week after receiving the vaccine), JOINT LOCK (Joint lock), PAIN (In pain), FORMICATION (Had a feeling of something crawling under the skin), MYALGIA (Muscle pain/ whole body hurts ( legs, hands, shoulders, etc.).) and ARTHRALGIA (Joint pain/Joint pain all over my body/Joint pain in ankles/Joints hurts). The patient was treated with PARACETAMOL (TYLENOL) on 01-Jun-2021 for Adverse event, at a dose of Every 5 hours. At the time of the report, MUSCULOSKELETAL STIFFNESS (Muscles has been locking up/Whole body just locking up), ABDOMINAL PAIN UPPER (Stomach hurt and sides hurt), MOBILITY DECREASED (Could not move her head for two weeks), SITTING DISABILITY (Can't sit to do anything), WHEELCHAIR USER (Sits in her wheelchair to keep her from falling), MYALGIA (Muscle pain/ whole body hurts ( legs, hands, shoulders, etc.).) and ARTHRALGIA (Joint pain/Joint pain all over my body/Joint pain in ankles/Joints hurts) had not resolved and ASTHENIA (Feeling weak for a week after receiving the vaccine), JOINT LOCK (Joint lock), PAIN (In pain), FORMICATION (Had a feeling of something crawling under the skin) and UNEVALUABLE EVENT (returned call from Safety) outcome was unknown.            Concomitant medications also included two medications for seizures.  It was reported that patient itself stated she  would rather die before getting the booster dose.   Most recent FOLLOW-UP information incorporated above includes: On 23-Aug-2021: Added concomitant medication ( Tylenol) start date, added new events ( mucoskeletal stiffness, sitting disability, abdominal pain upper, mobility decreased, wheel chair user)