unconscious, near death experience; extreme headache while at work; felt like he was walking on water; couldn't eat; couldn't sleep; doesn't remember any of it; couldn't talk; speech was garbled; wasn't understanding or comprehending anything; difficulty breathing; fatigue; muscle pain all over his body; joint pain; chills; nausea; vomiting; he couldn't control his bladder; fever that went up really high; dizziness; Weakness; Two spontaneous cases were received on 02Feb2021  concerning a male patient,  65 years of age. The cases are cross-linked.   The reporter stated the patient is their nephew.  According to one report, the patient experienced the following symptoms: "extreme headache while at work", "felt like he was walking on water", "couldn't eat", "couldn't sleep", "doesn't remember any of it", "unconscious", "near death experience", "he couldn't talk and speech was garbled", "he wasn't understanding or comprehending anything". According to the other report, her nephew experienced symptoms immediately upon receiving the vaccine. She reported the following symptoms not already mentioned by the first reporter; "difficulty breathing", "chronic headache:, "fatigue", "muscle pain all over his body", "joint pain", "chills", "nausea", "some vomiting", "couldn't control his bladder", "fever that went up really high", " lost ability to breathe", "dizziness", "weakness",  "Moderna shot is killing him", and "he is dying".  The patient's prior medical history include an allergy to Shellfish, previously reported as fish allergy. No other medical history was provided and concomitant product use was not provided by either reports.  Prior to the onset of events, the patient received his first of two planned doses of mRNA-1273, (date and batch number not provided), (injection site not provided), for prophylaxis of Covid-19 infection.  On ??Jan-2021, shortly after receiving mRNA-1273 immunization, the patient began experiencing the following symptoms:  "extreme headache while at work", "felt like he was walking on water", "couldn't eat", "couldn't sleep",  "he couldn't talk and speech was garbled", "he wasn't understanding or comprehending anything". At an unknown time later he experienced "difficulty breathing", "lost consciousness" and was admitted to the hospital ICU on 22Jan-2021. Transport to hospital and name of hospital was not reported.  According to the reporters the patient remained in the ICU for eleven days. The following symptoms were reported as occurring during his hospitalization either in the ICU or after transfer to a less acute unit on or about 01-Feb-2021: "chronic headache:, "fatigue", "muscle pain all over his body", "joint pain", "chills", "nausea", "some vomiting", "couldn't control his bladder", "fever that went up really high", " lost ability to breathe", "dizziness", "weakness",  "dying", unconscious for almost a week".  According to the reporters he had CT exams of spine and brain, and heart exams twice on different days while hospitalized but results "didn't find anything".  No other significant results or details of his hospital stay were reported.  As of the report date 02-Feb-2021 the patient remained hospitalized.  Action taken with mRNA-1273 in response to the events was not reported.  The outcome of the events were unknown.  Company comment:  The reported events, "loss of consciousness", "headache", "feeling abnormal", "weakness" "decreased appetite", "insomnia", "amnesia", " aphasia", "dysarthria", "confusional state", "dyspnea", "fatigue", " myalgia", "arthralgia", "chills", "nausea", "vomiting", " pyrexia", "urinary incontinence", and "dizziness" were possibly related to mRNA-1273.