Core Viewpoint - The article discusses the resurgence of COVID-19 cases in China, highlighting the increasing positivity rates and the need for continued vigilance, especially among high-risk populations [4][5][9]. Summary by Sections COVID-19 Resurgence - COVID-19 has become the leading pathogen in emergency visits across most regions in China, with positivity rates rising from 7.5% to 16.2% between late March and early May 2025 [5][6]. - The current wave of infections is attributed to a decline in population immunity, as the last peak occurred over six months ago [9]. Expert Opinions - Experts suggest that while the current strains are less virulent, high-risk groups, including the elderly and those with underlying health conditions, should remain cautious and take preventive measures [7][9]. - The article emphasizes the importance of vaccination and protective behaviors, especially for vulnerable populations [7][20]. Regional Differences - The article notes a temporal difference in the spread of COVID-19 between northern and southern China, with the south approaching its peak later than the north [10][11]. - Data indicates that southern provinces have a slightly higher positivity rate compared to northern provinces during this wave [10]. Variants and Symptoms - The main circulating variants are XDV and NB.1.8.1, both of which belong to the Omicron family and exhibit immune evasion capabilities [13][15]. - Symptoms of the current infections are generally mild but can lead to severe outcomes in high-risk individuals, with prolonged cough and other respiratory issues being common [15][19]. Vaccination Strategies - The article outlines the latest COVID-19 vaccines available in China, which include formulations targeting the XBB variant [24][26]. - Vaccination remains the best preventive measure, with studies showing significant reductions in hospitalization risks for vaccinated individuals [23][27]. Treatment Options - A variety of antiviral medications are available for COVID-19 treatment, with specific recommendations for high-risk patients [34][35]. - The article stresses the importance of using antiviral drugs judiciously, particularly for non-severe cases [35][36].

Core Viewpoint - The article discusses the recent COVID-19 diagnosis of singer Eason Chan, leading to the postponement of his concert dates, and highlights the rising COVID-19 positivity rates in various regions, emphasizing the need for continued vigilance without panic. Group 1: Eason Chan's Concert Postponement - Eason Chan announced the postponement of his concerts due to a COVID-19 diagnosis, expressing regret and apologizing to fans [4][6] - The rescheduled concert dates are May 29, May 30, and May 31, 2025, with ticket holders able to retain their original seats or opt for a full refund [5] Group 2: Rising COVID-19 Positivity Rates - COVID-19 positivity rates have increased in several Asian countries, with the Chinese CDC reporting a rise since April, particularly in southern provinces [7][8] - In Guangdong Province, the number of reported COVID-19 cases in April reached 23,188, a significant increase compared to March [8] - The positivity rate for emergency flu-like cases rose from 7.5% to 16.2%, indicating a growing prevalence of COVID-19 as a primary pathogen in emergency departments [8] Group 3: Expert Opinions and Recommendations - Experts advise that while the positivity rate is increasing, the severity of cases remains low, and the public should maintain awareness without panic [9][10] - It is recommended to use antiviral medications early in the infection to reduce the duration and severity of COVID-19 [11] - Public health measures include maintaining good hygiene, wearing masks in crowded places, and getting vaccinated, especially for vulnerable populations [14]

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]