Initial data has shown that vaccines from Moderna Inc and partners Pfizer Inc and BioNTech SE retain most of their effectiveness for at least six months, though for how much longer has not been determined.
Tshedimosetso e bontshitse gore meento e e tswang kwa Moderna Inc & Partners, Pfizer Inc le BioNTech SE e tlamela ka tshireletso ya dikgwedi di le thataro, le fa go ise go tlhomamisiwe gore go fitlha leng.