A large number of Bulgarians seem to have already been exposed to COVID-19 and recovered. That's according to opinion polls by Gallup International Balkan. The data are from an independent face-to-face survey, part of the agency's regular program.
A large number of Bulgarians seem to have already been exposed to COVID-19 and recovered. That's according to opinion polls by Gallup International Balkan. The data are from an independent face-to-face survey, part of the agency's regular program.
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