qīng / zhě / kě / yǐ / huí / jiā / guān / chá / zhòng / zhě / bì / xū / lì / jí / jiē / shòu / zhì / liáo

轻者可以回家观察，重者必须立即接受治疗。

In less severe cases, patients can return home for observation; more serious cases require immediate treatment.