得过流感就能终身免疫？有点悬

Group 1 - The article emphasizes the increased risk of respiratory infections, such as influenza, due to cold weather and environmental factors, urging the public to take these health threats seriously [1][3] - It clarifies the misconception that influenza is just a severe form of a cold, highlighting the significant differences in symptoms, severity, and treatment between the two [2][3] - The article stresses the importance of timely medical attention for severe flu symptoms to prevent complications [3] Group 2 - It debunks the myth that having had influenza provides lifelong immunity, explaining the virus's ability to mutate and the diminishing effectiveness of antibodies over time [4] - The article discusses the misconception that an early winter indicates a cold winter, explaining that early onset does not correlate with overall winter temperatures [5][6] - It addresses the common belief that antihypertensive medications weaken blood vessels, clarifying that high blood pressure is the actual cause of vascular issues [7] Group 3 - The article refutes the claim that coffee and carbonated drinks harm bone health, stating that moderate consumption does not significantly affect osteoporosis risk [8] - It dismisses the idea that WiFi routers can cause cancer, explaining that the radiation emitted is non-ionizing and not harmful to human health [9] - It corrects the notion that sleeping on one side leads to uneven shoulders, attributing such conditions primarily to genetic factors and posture [10][11] Group 4 - The article critiques the belief that meal replacement foods can lead to effortless weight loss, warning about potential nutritional deficiencies and the importance of combining diet with exercise for effective weight management [12]