Fever; Headache; FLU; Suffocating; Almost had a heart attack; High blood pressure/pressure rose; Breathing is not well/the breath is short; Feels a pressure in the chest; Lost the desire to eat/doesn't get hungry; Heart was beating fast; Does not sleep well; Very dry mouth; Very thirsty; Has been unable to work; Lost about 8 pounds; This spontaneous case was reported by a consumer and describes the occurrence of MYOCARDIAL INFARCTION (Almost had a heart attack), ASPHYXIA (Suffocating), DYSPNOEA (Breathing is not well/the breath is short), CHEST DISCOMFORT (Feels a pressure in the chest), DECREASED APPETITE (Lost the desire to eat/doesn't get hungry), PALPITATIONS (Heart was beating fast), INSOMNIA (Does not sleep well), DRY MOUTH (Very dry mouth), THIRST (Very thirsty), LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (Has been unable to work), WEIGHT DECREASED (Lost about 8 pounds), PYREXIA (Fever), HEADACHE (Headache), INFLUENZA (FLU) and HYPERTENSION (High blood pressure/pressure rose) in a 39-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. UNK) for COVID-19 vaccination.     No Medical History information was reported.   On 17-May-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On an unknown date, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 17-May-2021, the patient experienced DYSPNOEA (Breathing is not well/the breath is short) (seriousness criterion hospitalization prolonged), CHEST DISCOMFORT (Feels a pressure in the chest) (seriousness criterion hospitalization prolonged), DECREASED APPETITE (Lost the desire to eat/doesn't get hungry) (seriousness criterion hospitalization prolonged), PALPITATIONS (Heart was beating fast) (seriousness criterion hospitalization prolonged), INSOMNIA (Does not sleep well) (seriousness criterion hospitalization), DRY MOUTH (Very dry mouth) (seriousness criterion hospitalization prolonged), THIRST (Very thirsty) (seriousness criterion hospitalization prolonged), LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (Has been unable to work) (seriousness criterion hospitalization prolonged), WEIGHT DECREASED (Lost about 8 pounds) (seriousness criterion hospitalization prolonged), PYREXIA (Fever) (seriousness criterion hospitalization), HEADACHE (Headache) (seriousness criterion hospitalization), INFLUENZA (FLU) (seriousness criterion hospitalization) and HYPERTENSION (High blood pressure/pressure rose) (seriousness criterion hospitalization prolonged). On 19-May-2021, the patient experienced MYOCARDIAL INFARCTION (Almost had a heart attack) (seriousness criteria hospitalization prolonged and medically significant). On 08-Jun-2021, the patient experienced ASPHYXIA (Suffocating) (seriousness criteria hospitalization prolonged and medically significant). The patient was hospitalized from 19-May-2021 to 22-May-2021 due to HYPERTENSION, MYOCARDIAL INFARCTION and PALPITATIONS. On 22-May-2021, MYOCARDIAL INFARCTION (Almost had a heart attack) and HYPERTENSION (High blood pressure/pressure rose) had resolved. At the time of the report, ASPHYXIA (Suffocating), DYSPNOEA (Breathing is not well/the breath is short), CHEST DISCOMFORT (Feels a pressure in the chest), DECREASED APPETITE (Lost the desire to eat/doesn't get hungry), PALPITATIONS (Heart was beating fast), INSOMNIA (Does not sleep well), DRY MOUTH (Very dry mouth), THIRST (Very thirsty), LOSS OF PERSONAL INDEPENDENCE IN DAILY ACTIVITIES (Has been unable to work), WEIGHT DECREASED (Lost about 8 pounds), PYREXIA (Fever), HEADACHE (Headache) and INFLUENZA (FLU) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 17-May-2021, Blood pressure measurement: high (High) Blood pressure rose. On 19-May-2021, Blood pressure measurement: high (High) Blood pressure rose.         Concomitants medications were not reported.  Treatment information was not provided.  Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.    This case was linked to MOD-2021-214924 (Patient Link).; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.