Research is underway on the possibility of mixing one Covid vaccine brand with another and the safety of giving two doses of another brand to an individual who has already obtained one dose of the AstraZeneca Covishield vaccine. 
කොරෝනා ආසාදිත වූ තවත් පුද්ගලයන් 39 දෙනෙකු තහවුරු කර ගෙන තිබේ. එම සියළු දෙනා
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