Core Insights - The flu season of 2025 has arrived with a significant increase in cases, particularly driven by the H3N2 strain, which has led to a 237% increase in the sales of Oseltamivir and a 180% increase in the sales of the new antiviral drug, Marbofloxacin [1][2] Group 1: Flu Virus Characteristics - The predominant flu virus this season is the H3N2 subtype, which has replaced last year's H1N1 strain [1] - The changes in the virus are due to antigenic drift, a common phenomenon where the virus undergoes minor changes, making last year's vaccines less effective [1] Group 2: Differences Between Flu and Common Cold - Influenza is a serious respiratory illness caused by influenza viruses, characterized by high fever, severe headaches, body aches, dry cough, and fatigue, unlike the milder symptoms of the common cold [2] - Complications from influenza can include myocarditis, encephalitis, and pneumonia, highlighting the need for serious attention [2] Group 3: Prevention and Vaccination - Vaccination is emphasized as the primary preventive measure, with recommendations for all individuals over six months old to receive the flu vaccine [2] - Ten manufacturers have received approval for flu vaccines in China, with prices ranging from 31 to 103 yuan per dose, making them more accessible [2] Group 4: Treatment Options - Early treatment within 48 hours of symptom onset with antiviral medications like Oseltamivir or Marbofloxacin is crucial for effective management [3] - Marbofloxacin, produced locally by Roche, has a supply three times greater than last year, ensuring availability in hospitals nationwide [3] Group 5: Overall Health Message - The cost of prevention is always lower than the cost of treatment, emphasizing the importance of proactive health measures during the flu season [4]

Core Viewpoint - The current flu season in China is experiencing a rapid increase in activity, with the H3N2 virus remaining dominant, and experts clarify that there are no new pathogens causing emerging infectious diseases [1][2][3]. Group 1: Flu Virus Characteristics - The H3N2 subtype is not new and is a common variant, with seasonal fluctuations between H1N1, H3N2, and B-type flu viruses [3]. - Influenza viruses undergo "antigenic drift," leading to seasonal outbreaks, but this does not imply that the virus is becoming increasingly virulent [4][5]. Group 2: Vaccination Insights - With the flu season in full swing, vaccination remains beneficial, even for those who have experienced flu-like symptoms but have not been diagnosed [6][8]. - It is advised not to vaccinate during the acute phase of infection, but individuals can receive the vaccine after recovery from flu-like symptoms [7]. Group 3: Treatment and Symptoms in Children - Antibiotics are ineffective against viral infections like the flu, and treatment should focus on rest, hydration, and symptomatic relief [9]. - Symptoms in children can vary significantly, with older children showing symptoms similar to adults, while younger children may exhibit different signs such as digestive issues [9].

Core Insights - The demand for flu-related medications has significantly increased on Alibaba Health's platform, with antiviral drug purchases rising over 500% week-on-week, particularly for Mabalosavir, which saw a growth of over 600% [1][3][5] Group 1: Market Trends - The flu season has started earlier this year, leading to a rapid increase in flu activity across the country, with Beijing entering a high incidence period for respiratory infectious diseases [3][6] - Sales of Oseltamivir surged by 237% in the past week, while Mabalosavir saw an increase of 180% [3] - Online platforms like JD.com reported a 22-fold year-on-year increase in sales of flu medications, with Mabalosavir and Kewai seeing over 40-fold increases [6] Group 2: Consumer Behavior - There is a growing awareness among consumers regarding flu prevention and treatment, as evidenced by the significant rise in purchases of flu medications [1][5] - The demand for flu test kits and respiratory virus testing has also surged, with a 66% increase in orders for testing services [6] Group 3: Expert Insights - Experts warn that the H3N2 strain currently circulating is different from previous years, with lower immunity levels in the population, making it more transmissible [3][8] - The flu virus is known to undergo antigenic drift, leading to seasonal outbreaks, but this does not imply that the virus is becoming increasingly virulent [11][13]

Core Viewpoint - The current flu season in China is experiencing a rapid increase in activity, with the H3N2 virus remaining dominant, and experts clarify that there are no new pathogens detected [1][3]. Group 1: Flu Virus Characteristics - The H3N2 subtype is not new and is a common variant, with known pathogens circulating rather than unknown ones [3]. - Influenza viruses undergo "antigenic drift," leading to seasonal outbreaks, but this does not imply that the virus is becoming stronger over time [5]. Group 2: Vaccination Insights - Despite the flu season being in full swing, it is still beneficial to receive the flu vaccine, especially for those who have recovered from flu-like symptoms [7][9]. - Vaccination is recommended after symptoms have subsided, and it is not advisable to vaccinate during the acute phase of infection [7]. Group 3: Prevention Strategies - A dual prevention strategy of vaccination and maintaining good hygiene practices is advised to mitigate flu transmission [11]. - Antibiotics are ineffective against viral infections like the flu, and symptomatic treatment is recommended instead [12][14]. Group 4: Pediatric Considerations - Symptoms of flu in children can differ from adults, with younger children potentially showing less typical signs [15]. - Parents should monitor for severe symptoms in children and seek medical attention if necessary [17].