流感季防护，这些误区要避开

Group 1 - The flu is currently in a rapid increase phase nationwide, and recognizing common misconceptions is crucial for scientifically addressing the flu and protecting health [6] - Not all flu patients exhibit fever; symptoms can vary, especially in children, the elderly, and immunocompromised individuals, who may only show cough, fatigue, or lethargy [2][3] - For mild flu symptoms, hydration and rest can aid recovery, but severe symptoms like persistent high fever, severe cough, or difficulty breathing require immediate medical attention and antiviral medication within 48 hours of onset [3][4] Group 2 - After recovering from the flu, the body develops temporary immunity to the specific strain of the virus, but this immunity is not permanent and does not protect against other strains [4] - It is a misconception that one cannot contract the flu again shortly after recovery; individuals remain susceptible to other flu virus subtypes [4]