Biocredit swab antigen: Scientists begin research on blood type and severity of COVID-19 infection According to research, people with blood type A have a higher positive rate for the SARS-CoV-2 virus, so scientists believe it is necessary to investigate this blood type.

Antigen rapid test: how to face COVID-19 with a positive attitude? In fact, the epidemic not only threatens our physical health, but also shrouds our psychology in anxiety. So, how to alleviate anxiety?