病例数近4年最高！为啥今年流感如此厉害？医生紧急提醒：吃特效药，别用矿泉水

Core Insights - The current flu season in China is experiencing a significant rise in activity, with the H3N2 subtype accounting for over 95% of cases, surpassing previous years' data and becoming the highest in the last four years [1][3][4] Group 1: Flu Activity and Trends - The flu season data indicates that the H3N2 strain has become the dominant virus, while H1N1 has decreased in prevalence [4] - Nationwide monitoring shows that flu activity has reached high levels across various provinces, with this year's data exceeding that of previous years [3][4] - The emergence of a new "K-type" variant of H3N2 has contributed to the increased severity of this flu season, as it spreads more easily and has a lower match with existing vaccines [5][6] Group 2: Clinical Symptoms and Risks - Symptoms associated with the H3N2 strain include high fever (39-40°C), severe headaches, muscle aches, and fatigue, with some patients experiencing gastrointestinal symptoms and severe complications like pneumonia [6][8] - Patients are advised to monitor for warning signs such as increased respiratory rate and decreased oxygen saturation, which indicate potential severe illness [8][9] Group 3: Treatment and Prevention - Antiviral medications like Oseltamivir and Baloxavir are recommended for treatment, with specific guidelines on usage and timing to maximize effectiveness [10][11] - Vaccination against the H3N2 strain is available, with a reported efficacy rate of 60%-80%, significantly reducing the risk of severe illness even if infection occurs [13][14]