diagnosed with Type 1 diabetes/diabetic-related symptoms; immune system is now compromised due to this vaccine; This spontaneous case was reported by a patient family member or friend and describes the occurrence of TYPE 1 DIABETES MELLITUS (diagnosed with Type 1 diabetes/diabetic-related symptoms) and IMMUNODEFICIENCY (immune system is now compromised due to this vaccine) in a 23-year-old male patient who received mRNA-1273 (Spikevax) for COVID-19 prophylaxis.     No Medical History information was reported.    On an unknown date, the patient received dose of mRNA-1273 (Spikevax) (unknown route) 1 dosage form. On an unknown date, the patient experienced TYPE 1 DIABETES MELLITUS (diagnosed with Type 1 diabetes/diabetic-related symptoms) (seriousness criterion medically significant) and IMMUNODEFICIENCY (immune system is now compromised due to this vaccine) (seriousness criterion medically significant). The patient was treated with Manual therapy (Dependent on insulin) for Type 1 diabetes mellitus. At the time of the report, TYPE 1 DIABETES MELLITUS (diagnosed with Type 1 diabetes/diabetic-related symptoms) and IMMUNODEFICIENCY (immune system is now compromised due to this vaccine) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Weight: loss (Low) started losing weight and lost over 40 pounds in less than three months.     The action taken with mRNA-1273 (Spikevax) (Unknown) was unknown.       No concomitant medication was provided by reporter.  It was reported that patient have multiple other medical diabetic related symptoms. Ptaient was taken to the hospital and diagnosed with Type 1 diabetes. Doctors concluded that this onset of diabetes was most likely induced by the Moderna vaccine.  The Moderna vaccine was life-changing and life-threatening. Patient do not have this disease in family genetics and patient had never had any symptoms like that. Now patient totally insulin dependent. Parent's mother discovered that many who received this vaccine were induced into serious illnesses as a side-effect.  Company comment: This spontaneous case concerns a 23 year old male patient with no reported medical history, who experienced the unexpected serious (medically significant) events of Type 1 diabetes mellitus and Immunodeficiency within 6 weeks of receiving a dose with mRNA-1273 vaccine in the COVID-19 vaccination series. He started losing weight and lost over 40 pounds in less than three months. As a result of weight loss and multiple other diabetic related symptoms, he was taken to the hospital and diagnosed with Type 1 diabetes. Doctors concluded that this onset of diabetes was most likely induced by the Moderna vaccine. The benefit-risk relationship of mRNA-1273 is not affected by this report.; Sender's Comments: This spontaneous case concerns a 23 year old male patient with no reported medical history, who experienced the unexpected serious (medically significant) events of Type 1 diabetes mellitus and Immunodeficiency within 6 weeks of receiving a dose with mRNA-1273 vaccine in the COVID-19 vaccination series. He started losing weight and lost over 40 pounds in less than three months. As a result of weight loss and multiple other diabetic related symptoms, he was taken to the hospital and diagnosed with Type 1 diabetes. Doctors concluded that this onset of diabetes was most likely induced by the Moderna vaccine. The benefit-risk relationship of mRNA-1273 is not affected by this report.