risk for the complicated course of covid-19 due to: 1.1. hypertension; 1.2. diabetes mellitus; 1.3. immunosuppressive conditions; 1.4. chronic pathology of the respiratory system ; 1.5. chronic pathology of the cardiovascular system ; 1.6. malignant tumor ; 1.7. systemic inflammatory connective tissue disease ; 1.8. cerebrovascular disease ; 1.9. chronic hepatitis. hepatic cirrhosis; 1.10. inflammatory bowel diseases ; 1.11. chronic kidney disease ; drug or alcohol abuse as suspected by investigator; history of persistent diarrhea of any cause; use of pre- or probiotics during the last 2 weeks before enrollment; allergy to any components of the tds; technical difficulties to perform virtual study visits. inability to perform a blood test for antibodies after 6 months inability to swallow capsules, or choking / coughing while eating

risk for the complicated course of covid-19 due to: 1.1. hypertension; 1.2. diabetes mellitus; 1.3. immunosuppressive conditions; 1.4. chronic pathology of the respiratory system ; 1.5. chronic pathology of the cardiovascular system ; 1.6. malignant tumor ; 1.7. systemic inflammatory connective tissue disease ; 1.8. cerebrovascular disease ; 1.9. chronic hepatitis. hepatic cirrhosis; 1.10. inflammatory bowel diseases ; 1.11. chronic kidney disease ; drug or alcohol abuse as suspected by investigator; history of persistent diarrhea of any cause; use of pre- or probiotics during the last 2 weeks before enrollment; allergy to any components of the tds; technical difficulties to perform virtual study visits. inability to perform a blood test for antibodies after 6 months inability to swallow capsules, or choking / coughing while eating

covid-like symptoms in the previous 6 months ; vaccination against sars-cov-2 in the previous 12 months; risk for the complicated course of covid-19 due to: 3.1. hypertension; 3.2. diabetes mellitus; 3.3. immunosuppressive conditions; 3.4. chronic pathology of the respiratory system ; 3.5. chronic pathology of the cardiovascular system ; 3.6. malignant tumor ; 3.7. systemic inflammatory connective tissue disease ; 3.8. cerebrovascular disease ; 3.9. chronic hepatitis. hepatic cirrhosis; 3.10. inflammatory bowel diseases ; 3.11. chronic kidney disease ; drug or alcohol abuse as suspected by investigator; history of persistent diarrhea of any cause; use of pre- or probiotics during the last 2 weeks before inclusion or current use; allergy to any components of the tds; technical difficulties to perform virtual study visits. inability to perform a blood test for antibodies after 6 months inability to swallow capsules, or choking / coughing while eating

covid-like symptoms in the previous 6 months ; vaccination against sars-cov-2 in the previous 12 months; risk for the complicated course of covid-19 due to: 3.1. hypertension; 3.2. diabetes mellitus; 3.3. immunosuppressive conditions; 3.4. chronic pathology of the respiratory system ; 3.5. chronic pathology of the cardiovascular system ; 3.6. malignant tumor ; 3.7. systemic inflammatory connective tissue disease ; 3.8. cerebrovascular disease ; 3.9. chronic hepatitis. hepatic cirrhosis; 3.10. inflammatory bowel diseases ; 3.11. chronic kidney disease ; drug or alcohol abuse as suspected by investigator; history of persistent diarrhea of any cause; use of pre- or probiotics during the last 2 weeks before inclusion or current use; allergy to any components of the tds; technical difficulties to perform virtual study visits. inability to perform a blood test for antibodies after 6 months inability to swallow capsules, or choking / coughing while eating

1. covid-like symptoms in the previous 6 months ; 2. vaccination against sars-cov-2 in the previous 12 months; 3. risk for the complicated course of covid-19 due to: 3.1. hypertension; 3.2. diabetes mellitus; 3.3. immunosuppressive conditions; 3.4. chronic pathology of the respiratory system ; 3.5. chronic pathology of the cardiovascular system ; 3.6. malignant tumor ; 3.7. systemic inflammatory connective tissue disease ; 3.8. cerebrovascular disease ; 3.9. chronic hepatitis. hepatic cirrhosis; 3.10. inflammatory bowel diseases ; 3.11. chronic kidney disease ; 4. drug or alcohol abuse as suspected by investigator; 5. history of persistent diarrhea of any cause; 6. use of pre- or probiotics during the last 2 weeks before inclusion or current use; 7. allergy to any components of the tds; 8. technical difficulties to perform virtual study visits. 9. inability to perform a blood test for antibodies after 6 months 10. inability to swallow capsules, or choking / coughing while eating

1. covid-like symptoms in the previous 6 months ; 2. vaccination against sars-cov-2 in the previous 12 months; 3. risk for the complicated course of covid-19 due to: 3.1. hypertension; 3.2. diabetes mellitus; 3.3. immunosuppressive conditions; 3.4. chronic pathology of the respiratory system ; 3.5. chronic pathology of the cardiovascular system ; 3.6. malignant tumor ; 3.7. systemic inflammatory connective tissue disease ; 3.8. cerebrovascular disease ; 3.9. chronic hepatitis. hepatic cirrhosis; 3.10. inflammatory bowel diseases ; 3.11. chronic kidney disease ; 4. drug or alcohol abuse as suspected by investigator; 5. history of persistent diarrhea of any cause; 6. use of pre- or probiotics during the last 2 weeks before inclusion or current use; 7. allergy to any components of the tds; 8. technical difficulties to perform virtual study visits. 9. inability to perform a blood test for antibodies after 6 months 10. inability to swallow capsules, or choking / coughing while eating