近期新冠病毒阳性率升高，钟南山发声：预计6月底左右结束

Core Viewpoint - The recent rise in COVID-19 positivity rates across multiple regions in China is concerning, but the situation is deemed manageable and not panic-inducing according to expert opinions [1][4][7]. Summary by Sections Current COVID-19 Trends - COVID-19 positivity rates in China have increased from 7.5% to 16.2% in outpatient flu-like cases and from 3.3% to 6.3% in hospitalized severe acute respiratory infections from March 31 to May 4 [5][6]. - The current wave of infections is expected to peak around the end of June, lasting approximately 6 to 8 weeks [4][7]. Demographics and Risks - The elderly population, particularly those aged 65 and above with underlying health conditions, are identified as high-risk groups [14][15]. - In Hong Kong, over 83% of reported COVID-19 deaths were among individuals aged 65 and older, with over 90% having comorbidities [3]. Symptoms and Variants - The circulating variant is identified as XDV, which exhibits strong transmissibility but relatively lower pathogenicity compared to previous strains [8][10]. - Common early symptoms include fever, headache, fatigue, and sore throat, with a notable increase in throat pain [9]. Treatment Recommendations - It is advised that high-risk individuals take antiviral medications such as Lopinavir, Nirmatrelvir, and Molnupiravir within 48 hours of symptom onset to prevent severe illness [15][20]. - Current antiviral medications are not recommended for children under 5 years due to a lack of clinical trial data [20]. Public Health Recommendations - Individuals are encouraged to wear masks in crowded places, maintain social distancing, ensure proper ventilation, and adopt healthy lifestyle habits to boost immunity [21][25][26].