_:b57816194 . _:b57816197 "seroprevalence" . _:b57816194 "0.84"^^ . _:b57816196 . _:b57816196 _:b57816197 . _:b57816197 . _:b57816195 "C0019700" . _:b57816194 . _:b57816195 "T058" . _:b57816194 . _:b57816194 _:b57816196 . _:b57816194 _:b57816195 .