新冠、百日咳疫情态势如何？国家卫健委回应

Group 1 - The recent slight increase in COVID-19 cases in some regions is noted, but the clinical severity of the disease has not changed significantly [2][5][7] - Monitoring data indicates that the dominant COVID-19 variants have changed multiple times over the past two and a half years, with the latest variants showing a trend of immune evasion [3][4][6] - The positive rate of COVID-19 tests has been rising, particularly in southern provinces, while the overall level of acute respiratory infectious diseases remains low [2][3] Group 2 - The current dominant variant, XDV and its sub-variants, account for a significant proportion of cases and are spreading in various regions, including mainland China and neighboring countries [6] - Recommendations for preventive measures include maintaining good personal hygiene, wearing masks during long-distance travel, and ensuring vulnerable populations receive vaccinations [7][8] - The overall clinical severity of COVID-19 remains low, with most individuals recovering within a week, although those with weakened immune systems are at higher risk [5][7]