The purpose of this study is to see how the acute stage COVID-19 treatments by use of herbal medicine (Shen Cao Gan Jiang Tang) affect quality of life and symptoms at 3 months after hospital discharge.

According to the theory of Traditional medicine, the patient will suffer damage to Qi and Fluid in the acute phase and lead to damaged Yin and Qi in the post COVID-19 period.

The Shen Cao Gan Jiang Tang has the effect of enhance the Protective Qi, generating Fluid, is applied to treat the mild and moderate COVID-19 in the acute phase in some hospitals in Ho Chi Minh City, Viet Nam. The hypothesis is that with the use of the Shen Cao Gan Jiang Tang, the Qi and Yin will reduce the damage, so that the patient has a better quality of life and fewer post COVID-19 symptoms compared with the standard of care group

Inclusion Criteria:

• Patients able to understand and fill out a questionnaire
• From full 18 to 64 years old;
• Patients with the mild and moderate COVID-19 who used Shen Cao Gan Jiang Tang in the acute phase for intervention group.
• Participants enrolled in protocol NCT05055427.
• Voluntarily consented to participate in the study

Exclusion Criteria:

• Patient who are not able to complete 100% of the questionnaire Criteria for stopping the study
• The patient cannot be contacted after 04 calls, each call is at least 06 hours apart on the survey days.
• The patient does not want to continue participating in the study.

The mild and moderate COVID-19 patients who used the Shen Cao Gan Jiang Tang in the acute phase