Died; Unresponsive; Shortness of breath; Not able to eat; Sick; Nauseous; Vomiting; Passed out on kitchen floor; Blood sugar increased; A spontaneous report was received from a consumer concerning an unspecified age, female patient who received Moderna's COVID-19 vaccine (mRNA-1273) and experienced raised blood sugar/blood sugar increased, passed out on kitchen floor/loss of consciousness, nausea, vomiting, sick/illness, not being able to eat/decreased appetite, shortness of breath/dyspnea, unresponsive/unresponsive to stimuli and died/death.  The patient's medical history included diabetes. Products known to have been used by the patient, within two weeks prior to the event, included unspecified insulin.  On 11 Feb 2021, the patient received their first planned doses of mRNA-1273 (Batch number: unknown) intramuscularly for prophylaxis of COVID-19 infection.   On 11 Feb 2021, the patient had a rise in her blood sugar (blood sugar 208, 212, 199 up until her bedtime of 9:45PM).  On 12 Feb 2021, the patient passed out on the kitchen floor and the patient's blood sugar took a dive (blood sugar was 304 9:00AM, blood sugar was 260 10:30AM  then stayed over 200/280 all day even with insulin). That evening, the patient experienced nausea and vomiting.   On 13 Feb 2021, the patient's blood sugar was up and had nausea and vomiting throughout the night. The patient spoke with her doctor, who told her to regulate it with insulin if she needed too. Per the report, the doctor informed the patient that there have been studies that say the vaccine has shown to mess with blood sugars. The patient's blood sugar remained between 144-179 all day even with insulin. The patient had nausea and vomiting.  On 14 Feb 2021, the patient reported still being sick. The patient reported a weight loss of 5 pounds and reported not being able to eat. Blood sugar was 174-292 all day even with insulin.  On 17 Feb 2021, the patient's blood sugar was bouncing between 53-151 all day even with insulin.  On 18 Feb 2021, the patient reported shortness of breath and was using Vicks to help clear the nasal passage.   On 19 Feb 2021, approximately at 6:00AM, the patient's spouse found patient breathing but unresponsive. At approximately 7:25AM, the patient died.  Treatment information included, unspecified insulin and Vicks.   Action taken with the drug in response to the event is not applicable.  The outcome of event, passed out on kitchen floor/loss of consciousness, was considered resolved on 12 Feb 2021.  The outcome of events, raised blood sugar/blood sugar increased, passed out on kitchen floor/loss of consciousness, nausea, vomiting, sick/illness, not being able to eat/decreased appetite, shortness of breath/dyspnea, were considered unknown.  The outcome of events, unresponsive/unresponsive to stimuli and died/death, were considered fatal.  The cause of death was not provided. Plans for autopsy was not provided.; Reporter's Comments: Very limited information regarding these events has been provided at this time. Patient's history of uncontrolled diabetes with recent fluctuations may have been contributory for the occurrence of the death. Further information has been requested.; Reported Cause(s) of Death: Unknown cause of death