@TeddyBeddy10 @Usnea13 @alexmeshkin What kind of test. Antigens routinely negative on first few days of symptoms.
@TeddyBeddy10@Usnea13@alexmeshkin什么样的测试。在出现症状的前几天，抗原通常呈阴性。
@TeddyBeddy10 @Usnea13 @alexmeshkin What kind of test. Antigens routinely negative on first few days of symptoms.
@TeddyBeddy10@Usnea13@alexmeshkin什么样的测试。在出现症状的前几天，抗原通常呈阴性。