Recently, Dr. Zhong Nanshan, an academician of the Chinese Academy of Engineering and a renowned respiratory disease expert, reminded the public: if a high fever persists for more than three days after contracting influenza, one should seek medical attention immediately. This advice aims to help people recognize early signs of severe flu and prevent complications.Dr. Zhong explained that typical influenza usually causes fever that subsides within 1–2 days, with symptoms gradually improving. However, if a high fever (above 38.5°C) lasts longer than 72 hours, it may indicate serious complications such as pneumonia, myocarditis, or secondary bacterial infections. Elderly individuals, young children, pregnant women, and those with underlying chronic conditions are at especially high risk.He emphasized that people should not rely solely on fever-reducing medications to mask symptoms but should closely monitor overall condition changes. Immediate medical care is necessary if symptoms like difficulty breathing, chest pain, confusion, or persistent vomiting occur—regardless of whether the fever has subsided.Additionally, Dr. Zhong urged the public to prioritize annual flu vaccination, which remains one of the most effective ways to prevent influenza and its severe outcomes. During flu season, maintaining good hygiene, wearing masks, and avoiding crowded places are also crucial preventive measures.In short, the guideline ‘seek medical help if fever lasts over three days’ is not only practical health advice but also an important scientific reminder for the public in managing infectious diseases.
近日，中国工程院院士、著名呼吸病学专家钟南山提醒公众：若感染流感后连续3天高烧不退，应立即就医。这一建议旨在帮助人们及时识别重症流感的早期信号，避免病情恶化。钟南山指出，普通流感通常在1-2天内体温会逐渐下降，症状也会随之缓解。但如果高烧（体温超过38.5℃）持续超过72小时，可能意味着病毒引发更严重的并发症，如肺炎、心肌炎或继发细菌感染。尤其对于老年人、儿童、孕妇以及有慢性基础疾病的人群，这类风险更高。他强调，不应盲目依赖退烧药掩盖症状，而应关注整体病情变化。一旦出现呼吸困难、胸痛、意识模糊、持续呕吐等症状，无论是否退烧，都需尽快前往医院就诊。此外，钟南山还呼吁公众重视流感疫苗接种，这是预防流感及其严重并发症最有效的手段之一。在流感高发季节，保持良好卫生习惯、佩戴口罩、避免人群聚集同样重要。总之，‘3天不退烧要就医’不仅是一条实用的健康提示，更是对公众科学应对传染病的重要指导。
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