_:b56601400 _:b56601401 . _:b56601399 "T058" . _:b56601401 "seroprevalence" . _:b56601398 "0.84"^^ . _:b56601399 "C0019700" . _:b56601398 _:b56601400 . _:b56601400 . _:b56601401 . _:b56601398 _:b56601399 . _:b56601398 . _:b56601398 . _:b56601398 .