1. Although the appearance of COVID-19 antigen cotton swab is similar to that of cotton swab, it is not an ordinary cotton swab. The top of COVID-19 antigen cotton swab is flocked, which is more valuable for collection. After sampling, press the swab head through the sampling tube to elute the sample. However, ordinary cotton swabs may prevent the preservation solution from being squeezed out, thus affecting the test results. Moreover, the COVID-19 antigen cotton swab is less irritating to the detection site, so it cannot be replaced.
2. novel coronavirus is highly contagious, and symptoms such as fever and cough may appear after infection. It is suggested that patients should be well protected and isolated after discomfort, and contact a doctor for testing and treatment.