新冠阳性率升高、陈奕迅暂停演唱会 专家表示：仍需重视，无需恐慌

Group 1 - Eason Chan announced the postponement of his concert due to a confirmed COVID-19 diagnosis, affecting performances scheduled for May 16, 17, and 18 in Kaohsiung [1] - The concert team is coordinating rescheduling, and ticket holders can use their original tickets for the new dates or opt for a full refund [1] - The COVID-19 positivity rate has been increasing in various Asian regions, with the Chinese CDC reporting a rise since April, particularly in southern provinces [1][2] Group 2 - The Guangdong CDC reported 23,188 new COVID-19 cases in April, a significant increase from 3,548 cases in March, indicating a more than fivefold rise [2] - The current dominant strain in Hong Kong and Macau is the XDV variant, which has been monitored since last year and is associated with the JN.1 variant [4] - Despite the rising positivity rates, the severity of cases remains low, with few hospitalizations and no critical cases reported in ICUs [5] Group 3 - Experts emphasize the importance of early antiviral treatment to shorten the duration of illness and reduce severe outcomes, with sufficient supplies of antiviral medications available [6] - There is a possibility of co-infection with influenza and COVID-19, but such cases are rare; public health measures remain similar for both viruses [7] - The overall level of respiratory infectious diseases is low, but there is a risk of outbreaks in crowded settings like schools and daycare centers [7]