オミクロン株「来月に９割」　専門家組織推計、「入院急増も」

　新型コロナウイルス対策を助言する厚生労働省の専門家組織「アドバイザリーボード」は２８日、変異株「オミクロン株」の拡大で「入院の必要な人が急増する可能性がある」との見解をまとめた。大阪府内の感染者について、同株の割合が来年１月中旬に９割を超えるとの推計も報告され、急速に置き換わりが進むとの見方を示した。
　京都大の西浦博教授らは会合で、大阪の新規感染者に占めるオミクロン株の割合は、来年１月１１日に９０％を超えると試算。感染者１人が平均してうつす人数「実効再生産数」は同日時点で、デルタ株と比べ２．６４倍に上るとした。（2021/12/28-20:25）

The omicron variant of the novel coronavirus is projected to account for 90 pct of new COVID-19 cases in Osaka Prefecture, western Japan, in mid-January, according to an analysis shown at a meeting of a health ministry advisory board on Tuesday.
   Osaka's proportion of omicron cases is expected to top 90 pct on Jan. 11, according to the analysis by Kyoto University professor Hiroshi Nishiura and other experts.
   The effective reproduction number, or the average number of people infected by a single carrier, for the omicron variant is estimated to be 2.64 times that of the delta strain on Jan. 11, according to the experts.
   The advisory board warned that the number of people who need to be hospitalized may increase rapidly due to the spread of the omicron variant.
   While the omicron variant has been shown to have a lower risk of causing serious symptoms, its infectious power is a cause for concern, the advisory board said.