Ngaphantsi kwemvelaphi yesiqhelo sobhubhane we-Covid-19, imfuno yaphesheya yeemveliso ze-antigen ye-Covid-19 nayo itshintshile ukusuka kwimfuno yangaphambili kaxakeka ukuya kwimfuno eqhelekileyo, kwaye intengiso isebanzi.Njengoko sisazi sonke, iimfuno zofikelelo ze-EU...
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