China's COVID-19 infection level has remained stable at a low level despite a recent uptick, and there is no need for the public to be unduly concerned about normal fluctuations in case numbers as the disease has evolved into a common respiratory virus, a health expert said on Thursday. 一名衛生專家週四表示，近期新冠感染病例雖略有回升，但我國新冠感染整體仍維持低位平穩態勢；新冠已演變為常見呼吸道病毒，公眾無需對病例數量的正常波動過度擔憂。 Chang Zhaorui, a researcher at the China Center for Disease Control and Prevention, said national COVID-19 activity has remained at a low level since October. 中國疾病預防控制中心研究員常昭瑞稱，自去年 10 月以來，全國新冠病毒傳播活動一直處於低水平。 The epidemic situation showed signs of flaring up in late May this year but returned to low-level circulation by mid-June. 今年 5 月下旬疫情曾出現小幅反彈，到 6 月中旬已回落至低流行水平。 Chang said that the positivity rate of COVID-19 infections at sentinel hospitals has recently increased. Da...