1. Any situation that makes the programme cannot proceed safely, 2. Known allergy or hypersensitivity reaction to lopinavir / ritonavir, 3. Increase in alanine aminotransferase (ALT) / aspartate aminotransferase (AST) is more than 5 times the upper limit of normal, 4. Use of medications that are contraindicated with lopinavir / ritonavir and that cannot be replaced or stopped during the study period, such as CYP3A inhibitors, 5. Pregnancy: positive pregnancy test for women of childbearing age, 6. Known HIV infection, because of concerns about the development of resistance to lopinavir/rionavir if used without combination with other anti-HIV drugs, 7. Patient likely to be transferred to a non-participating hospital within 72 hours, 8. Researchers consider unsuitable.

1. Any situation that makes the programme cannot proceed safely, 2. Known allergy or hypersensitivity reaction to lopinavir / ritonavir, 3. Increase in alanine aminotransferase (ALT) / aspartate aminotransferase (AST) is more than 5 times the upper limit of normal, 4. Use of medications that are contraindicated with lopinavir / ritonavir and that cannot be replaced or stopped during the study period, such as CYP3A inhibitors, 5. Pregnancy: positive pregnancy test for women of childbearing age, 6. Known HIV infection, because of concerns about the development of resistance to lopinavir/rionavir if used without combination with other anti-HIV drugs, 7. Patient likely to be transferred to a non-participating hospital within 72 hours, 8. Researchers consider unsuitable.