COVID-19 Saliva Antigen Rapid Test
The main infection site of the SARS-CoV-2 is the lower respiratory tract. The incubation period of infection is variable. Common symptoms after infection with SARS-CoV-2 include respiratory symptoms, fever, cough, shortness of breath, and difficult breathing. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome, kidney failure, and even death.