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经历了超长夏季后,申城的天气逐渐转凉,季节交替,进入了呼吸道传染病的高发期,近期儿科门诊中呼吸道合胞病毒更是成为关注焦点。合胞病毒(RSV)是一种常见的、具有高度传染性的呼吸道病毒,是1岁内婴儿肺部感染住院的首要检出病原。严重合胞病毒感染的婴儿,可能出现反复喘息或哮喘等肺功能受损问题,对孩子造成长期影响。
合胞病毒主要通过呼吸道飞沫和密切接触传播。当患者咳嗽、打喷嚏时,病毒会通过飞沫播散到空气中,被他人吸入。病毒也可能附着在物品表面(如玩具、门把手等),如果手部接触了这些物品,再触摸口鼻或眼睛也会被感染。
近期呼吸科成人门诊中,我们还发现合胞病毒并非只威胁儿童,全年龄段都易感,尤其是在老年人及有基础病人群中可能引发严重并发症。对于成年人来说,感染后的症状通常与普通感冒相似,包括发热、咳嗽、鼻塞、流涕等,多数情况下症状较轻且可在1至2周自愈。最近有研究指出,合胞病毒感染可能与增加心血管疾病和失智症的风险有关。
要预防合胞病毒感染,日常防护尤为关键。勤洗手,使用肥皂或含酒精的洗手液,严格遵守七步洗手法;咳嗽或打喷嚏时用纸巾或手肘遮挡;在密闭或人群密集场所佩戴口罩;保持室内清洁通风,每天定时开窗;同时规律作息、均衡饮食、适度运动以增强免疫力。
我国目前已上市用于预防合胞病毒感染的长效单克隆抗体——尼塞韦单抗注射液,单次肌肉注射即可提供约5个月的保护,能显著降低婴幼儿因合胞病毒感染住院的风险。但该药并非疫苗,而是一种被动免疫方式,通过直接提供抗体阻断病毒入侵,目前仅推荐婴幼儿使用。
若家中已有感染患儿,应注意家庭防护。虽然无需强制隔离,但应让孩子居家休息,避免前往人多场所,照护者应勤洗手、佩戴口罩,并定期清洁玩具、床栏等接触物表面。合胞病毒在硬质物体上可存活数小时,酒精或含氯消毒剂均可有效灭活。
季节交替之际,合胞病毒感染、流感等呼吸道疾病常常交织流行。家长应提高警惕,一旦孩子出现持续高热、呼吸急促、喂养困难等症状,应尽早就医。科学防护、规范诊疗,是抵御病毒、守护健康的最佳防线。
史兆雯(上海市普陀区中心医院呼吸与危重症医学科副主任医师)
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