- Severe mental illness, severe chronic respiratory diseases, severe diseases of the cardiovascular system, severe kidney disease, severe liver disease, severe blood system diseases, severe neurological and neuromuscular disease, severe metabolic and endocrine system disease, severe diabetes, immune function (including the application of immunosuppressant or HIV infection to low immune function etc.); The laboratory test indexes more than twice the upper limit of normal reference value or abnormal results that don't fit for the study confirmed by researchers;