Alat rapid antigen: why do some people never get the new coronavirus?The French newspaper Le Figaro said a small number of people were less likely to be infected than others, despite having been in contact with someone infected with the new coronavirus, due to a very specific set of factors.

Antigen dan swab: WHO premature lifting of epidemic prevention restrictions. After some European countries successively lifted epidemic prevention restrictions, the number of new crown infections in these countries has surged.