tightening in his throat muscle; unable to move much; unstable blood pressure; unstable oxygen; bled due to blood thinner; weak in terms of walking; coughing; every joint and muscle from neck to toe in pain; every joint and muscle from neck to toe in pain; cold; entire body in excruciating pain; A bit off; Bruising in arm; A spontaneous report was received from a consumer concerning a 83-year-old male patient who received Moderna's COVID-19 vaccine (mRNA-1273) and experienced the following events: bruising in arm (contusion), a bit off (feeling abnormal), entire body in excruciating pain (pain), every joint and muscle from neck to toe in pain (arthralgia/myalgia), tightening in his throat muscle (throat tightness), unable to move much (hypokinesia), unstable blood pressure (blood pressure abnormal), unstable oxygen (oxygen saturation abnormal), bled due to blood thinner (haemorrhage), cold (feeling cold), weak in terms of walking (muscular weakness), and coughing (cough),   The patient's medical history included small cancer treated last year with 38 radiation treatments. No concomitant medications were reported.  On 11 Feb 2021, prior to the onset of the events the patient received their first of two planned doses of mRNA-1273 (lot/batch: 031620A) intramuscularly for prophylaxis of COVID-19 infection.  On 11 Feb 2021, the patient experienced little bruising in the arm. On 12 Feb 2021, the patient was a bit off. On Sunday, 28 Feb 2021, in the evening, the patient got cold, and within minutes his entire whole body was in excruciating pain, every joint and muscle from neck to toe were in pain. It felt like it was invaded with COVID. He went to hospital and got tested for COVID, Strep throat and Flu, and all three test results were negative. On an unknown date, the patient experienced tightening in his throat muscle and he went to the hospital where he was admitted.  While there, they did every possible test, chest MRI, Neck MRI, all possible viral tests, and rapid and full COVID test.  The rapid and full COVID tests came back negative.  Results for chest MRI, neck MRI and viral tests were not provided.  The hospital also performed a blood culture for bacteria. Results were not provided.  The patient was unable to move much, his blood pressure and oxygen were a little unstable. On 06 Mar 2021, the hospital did a major blood test which came back negative and the patient was released from a hospital. He stated that he was still weak in terms of walking and coughing. He stated that he recently bled due to taking blood thinner.  Treatment included major antibiotic treatments and steroids for pain during the hospital stay. The patient was still taking prednisone at a tapering dose.  Action taken with mRNA-1273 in response to the events was unknown.   The events of weak in terms of walking, coughing were unresolved, while the outcome of the events of tightening in his throat muscle, unable to move much, unstable blood pressure, unstable oxygen, bled due to blood thinner, Bruising in arm, cold, entire body in excruciating pain, every joint and muscle from neck to toe in pain, every joint and muscle from neck to toe in pain was unknown.; Reporter's Comments: Based on a strong temporal association between the reported events and administration of mRNA-1273 vaccine, a causal association cannot be excluded.  Myalgia and arthralgia are consistent with the known safety profile of the vaccine