soreness at the injection site; could barely walk/ legs were going to break when I walked on them; stress; felt tired; intense muscle pain/ achy; fever (102 F); felt like having covid all over again; intense bone pain; shortness of breath; tachycardia/ tachycardia got to 130; oxygen dropped to 88%; little bit dizzy; This spontaneous case was reported by a nurse and describes the occurrence of SUSPECTED COVID-19 (felt like having covid all over again), BONE PAIN (intense bone pain), DYSPNOEA (shortness of breath), TACHYCARDIA (tachycardia/ tachycardia got to 130) and OXYGEN SATURATION DECREASED (oxygen dropped to 88%) in a 56-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 026L20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Breast cancer female and COVID-19.    On 14-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 14-Jan-2021, the patient experienced SUSPECTED COVID-19 (felt like having covid all over again). 14-Jan-2021, the patient experienced BONE PAIN (intense bone pain), DYSPNOEA (shortness of breath), TACHYCARDIA (tachycardia/ tachycardia got to 130), OXYGEN SATURATION DECREASED (oxygen dropped to 88%), DIZZINESS (little bit dizzy), STRESS (stress), FATIGUE (felt tired), MYALGIA (intense muscle pain/ achy) and PYREXIA (fever (102 F)). On 15-Jan-2021, the patient experienced GAIT DISTURBANCE (could barely walk/ legs were going to break when I walked on them) and VACCINATION SITE PAIN (soreness at the injection site). The patient was treated with PARACETAMOL (TYLENOL) on 14-Jan-2021 for Fever, at an unspecified dose and frequency. In January 2021, SUSPECTED COVID-19 (felt like having covid all over again), BONE PAIN (intense bone pain), DYSPNOEA (shortness of breath), TACHYCARDIA (tachycardia/ tachycardia got to 130), OXYGEN SATURATION DECREASED (oxygen dropped to 88%), DIZZINESS (little bit dizzy), GAIT DISTURBANCE (could barely walk/ legs were going to break when I walked on them), STRESS (stress), FATIGUE (felt tired), MYALGIA (intense muscle pain/ achy) and PYREXIA (fever (102 F)) had resolved and VACCINATION SITE PAIN (soreness at the injection site) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 14-Jan-2021, Body temperature: 102 f (High) 102 F. On 14-Jan-2021, Heart rate: 130 (High) 130. On 14-Jan-2021, Oxygen saturation: 88 % (Low) 88%.     mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was withdrawn on an unknown date.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   About 3 hours after first shot, nurse felt like having COVID all over again. She felt tired, but she thought it was due to being so stressed. She also had Intense bone pain, intense muscle pain, shortness of breath, tachycardia, fever (102 F). She had Tylenol and the fever went down. Her oxygen dropped to 88 percent and got a little bit dizzy during the night. She drank a lot of fluids while going through that. The tachycardia got 130 at some point. Symptoms lasted for 10 hours or until the morning. The next day, she was so achy, she could barely walk and felt like her legs were going to break when she walked on. Everything went away after 2 days. On the second day, nurse felt amazing like a superhero, like a rebound effect.  No concomitant medications were reported.   This case was linked to MOD-2021-335717 (Patient Link).; Sender's Comments: This case concerns a 56-year-old female patient with no relevant medical history who experienced non-serious unexpected events of suspected COVID-19, bone pain, dyspnoea, tachycardia, oxygen saturation decreased, dizziness, stress, fatigue, myalgia, pyrexia, gait disturbance and vaccination site pain. The events occurred approximately 1 day after the first dose of mRNA-1273. Rechallenge was positive as adverse events resolved prior to dose 2, and patient reports that she did experience the same adverse events after second dose. The benefit-risk relationship of mRNA-1273 is not affected by this report.