Very sick/ uncomfortable/ dying/ not feeling well; Severe pain throughout his body/ Could not leave his house; Heart was racing; This spontaneous case was reported by a patient and describes the occurrence of PAIN (Severe pain throughout his body/ Could not leave his house), PALPITATIONS (Heart was racing) and ILLNESS (Very sick/ uncomfortable/ dying/ not feeling well) in a 75-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis.     No Medical History information was reported.   On 01-May-2022, the patient received fourth dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form and first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 01-May-2022, the patient experienced PAIN (Severe pain throughout his body/ Could not leave his house) (seriousness criterion hospitalization). In 2022, the patient experienced PALPITATIONS (Heart was racing) (seriousness criterion hospitalization). On an unknown date, the patient experienced ILLNESS (Very sick/ uncomfortable/ dying/ not feeling well) (seriousness criterion hospitalization). The patient was hospitalized on 23-Jun-2022 due to ILLNESS, PAIN and PALPITATIONS. At the time of the report, PAIN (Severe pain throughout his body/ Could not leave his house), PALPITATIONS (Heart was racing) and ILLNESS (Very sick/ uncomfortable/ dying/ not feeling well) outcome was unknown.            No concomitant and treatment medication was reported.  The patient was calling from the hospital. The patient did not have any information regarding Moderna primary series and first Moderna booster dose nor reported any side effects or adverse reactions to these doses. The patient felt like dying, the heart was racing and was uncomfortable. Patient was in the hospital because of malpractice from the doctor at his hospital.  Company Comment: This spontaneous case concerns a 75-year-old, male patient with no medical history reported, who experienced the unexpected, serious events of Pain, Palpitations, & Illness after receiving a 2nd booster dose of mRNA-1273 vaccine that led to hospitalization. Reportedly, he experienced severe pain throughout his body on the same day of vaccination. He also noted that his heart was racing and that he got very sick - was not feeling well, he was dying, and felt uncomfortable - on an unspecified date post-vaccination. Further details on the medical history, clinical course, diagnostics, and treatments were not reported. The benefit-risk relationship of mRNA-1273 is not affected by this report. Events' seriousness assessed based on medical judgement and the available information.   Most recent FOLLOW-UP information incorporated above includes: On 24-Jun-2022: Live follow-up received: Additional event and narrative was updated.; Sender's Comments: This spontaneous case concerns a 75-year-old, male patient with no medical history reported, who experienced the unexpected, serious events of Pain, Palpitations, & Illness after receiving a 2nd booster dose of mRNA-1273 vaccine that led to hospitalization. Reportedly, he experienced severe pain throughout his body on the same day of vaccination. He also noted that his heart was racing and that he got very sick - was not feeling well, he was dying, and felt uncomfortable - on an unspecified date post-vaccination. Further details on the medical history, clinical course, diagnostics, and treatments were not reported. The benefit-risk relationship of mRNA-1273 is not affected by this report. Events' seriousness assessed based on medical judgement and the available information.