PhotoByMarceloSchneider 2021 03 04 — Porto Alegre, Brazil - A nurse holds an ampoule of the CoronaVac vaccine, which was developed by China's Sinovac Biotech and is partly manufactured locally by the Butantan biomedical institute. Photo: Marcelo Schneider/WCC

WCC answers your questions about vaccines

07.05.2021 - 16:04

Aleksandar Angelov

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