We need to know one thing, if your antigen test is positive, it most probably that you are infected by covid-19. And you may need test conscientiously for at least one week.

Alat antigen: update on New Coronavirus pneumonia. From 0:00 to 24:00 on April 19, 31 provinces (autonomous regions and municipalities directly under the central government) and Xinjiang production and Construction Corps reported 2761 new confirmed cases.

Alat rapid test antigen: experts criticized "coexistence with the new crown". The latest data released by the Office for National Statistics on April 1 showed that the number of new coronavirus cases in the UK exceeded 4.9 million in a single week, a new high.