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Russia's Vector says COVID-19 vaccine provides immunity lasting at least 6 month
MOSCOW : The vaccine against COVID-19 developed by Russia's research center Vector does not provide life-long immunity, but guarantees immunity that will last at least six months, the head of the center's zoonotic diseases and flu department said on Thursday."This vaccine does not provide life-long immunity, and this is fine, as we do not introduce any changes [in our system] that will last forever ...