pain under my left rib cage; travelling to my back on my left side; underlying symptoms of covid; Lack of drug effect; This spontaneous case was reported by a consumer and describes the occurrence of MUSCULOSKELETAL CHEST PAIN (pain under my left rib cage), BACK PAIN (travelling to my back on my left side), SUSPECTED COVID-19 (underlying symptoms of covid) and DRUG INEFFECTIVE (Lack of drug effect) in a 64-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 017B21A and 022M20A) for COVID-19 vaccination.     No Medical History information was reported.   On 28-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 27-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 02-Dec-2021, the patient experienced MUSCULOSKELETAL CHEST PAIN (pain under my left rib cage), BACK PAIN (travelling to my back on my left side), SUSPECTED COVID-19 (underlying symptoms of covid) and DRUG INEFFECTIVE (Lack of drug effect). At the time of the report, MUSCULOSKELETAL CHEST PAIN (pain under my left rib cage), BACK PAIN (travelling to my back on my left side), SUSPECTED COVID-19 (underlying symptoms of covid) and DRUG INEFFECTIVE (Lack of drug effect) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 02-Dec-2021, SARS-CoV-2 test: positive (Positive) Positive.         Lab test data on an unknown date x-ray and CT scan of chest were performed but results did not provided. The patient had pain under his left rib cage which was travelling to his back on his left side. The patient tested for covid-19 which came back positive. The doctor said he had underlying symptoms of covid. The patient had no previous history of pericarditis or myocarditis. No Concomitant medication was reported. No treatment medications were reported.  This is spontaneous case concerning a 64-year-old male patient with no medical history reported, who experienced the unexpected event of musculoskeletal chest pain, back pain, suspected COVID-19 and drug ineffective. The event occurred approximately 245 days after the second dose of the mRNA  1273 vaccine. Patient tested positive on SARS-COV-2 test on the same day the events were experienced and at the time of report outcome of events was still unknown. The reporter's assessment was not provided. The rechallenge was unknown since there's no information about the first dose. The benefit-risk relationship of the vaccine is not affected by this report.; Sender's Comments: This is spontaneous case concerning a 64-year-old male patient with no medical history reported, who experienced the unexpected event of musculoskeletal chest pain, back pain, suspected COVID-19 and drug ineffective. The event occurred approximately 245 days after the second dose of the mRNA  1273 vaccine. Patient tested positive on SARS-COV-2 test on the same day the events were experienced and at the time of report outcome of events was still unknown. The reporter's assessment was not provided. The rechallenge was unknown since there's no information about the first dose. The benefit-risk relationship of the vaccine is not affected by this report.