(1)Subjects who are 16 years old or older on the date of consent acquisition and who have obtained the consent of the substitute if they are 16 years old or older and less than 20 years old(2)Sex, male or female(3)quarantine at the hotel(4)Meets all of 1)-3) below 1) Subjects whose Asymptomatic/mild case has at least one RT-PCR test positive for SARS-CoV-2 from pharyngeal swab, nasopharyngeal swab or saliva. 2) Subjects who can gargle 3) Subjects who will be quarantined for 6days or more(5)Subjects who have obtained written consent voluntarily to participate in the trial

(1)Subjects who are 16 years old or older on the date of consent acquisition and who have obtained the consent of the substitute if they are 16 years old or older and less than 20 years old(2)Sex, male or female(3)quarantine at the hotel(4)Meets all of 1)-3) below 1) Subjects whose Asymptomatic/mild case has at least one RT-PCR test positive for SARS-CoV-2 from pharyngeal swab, nasopharyngeal swab or saliva. 2) Subjects who can gargle 3) Subjects who will be quarantined for 6days or more(5)Subjects who have obtained written consent voluntarily to participate in the trial