孩子游泳后高烧不退？警惕腺病毒感染

暑期游泳人群增加，多地疾控部门发布警示提醒家长关注腺病毒感染风险1。游泳后若出现持续高热、咽痛、眼睛发红等症状，应警惕由腺病毒引起的咽结膜热，俗称"泳池热"1。这种病症主要感染儿童和青少年，症状通常累及呼吸道、消化道和眼部，常伴反复高热1。

腺病毒是一种DNA病毒，具有强大的环境抵抗力，在室温下可存活约10天，4℃环境下可存活数月，这使其成为难以防控的病原体1。引起"泳池热"的腺病毒以3型、7型为主，近年还出现了114型等新的基因型1。腺病毒主要通过飞沫、接触和粪口传播1。虽然目前缺乏特效药物治疗，但多数腺病毒感染患者可自行痊愈1。

游泳池的消毒难度在于，腺病毒对普通酒精不敏感，需要使用含氯消毒剂或紫外线照射进行有效消杀1。根据国家标准《公共场所卫生指标及限值要求》规定，人工游泳池水的游离余氯应维持在0.3—1.0毫克/升，但腺病毒对含氯消毒剂具有抵抗力，当池水中游离余氯低于0.2毫克/升时，对腺病毒基本无效1。有效的消杀还可在56℃条件下持续加热30分钟1。

腺病毒感染的潜伏期平均为3至8天，最短约2天，最长可达3周1。家长需注意的是，若孩子反复高热超过3天，或出现呼吸急促、精神萎靡、食欲明显下降、明显脱水等情况，应及时就医1。近年来曾有多起游泳相关的腺病毒感染聚集性疫情报告，其中2011年福建长泰县某少体校游泳队累计报告病例超过20例，2013年广东从化一周内也出现多例感染患者1。

Multiple health departments across China have issued warnings as summer swimming season drives up infection risks, alerting the public to watch for persistent high fever, sore throat, and eye redness that may signal adenoviral pharyngeal-conjunctival fever, commonly known as "swimming pool fever"1. Adenovirus is a DNA virus that primarily affects children and adolescents1. The virus demonstrates strong environmental resistance and poses particular challenges for disinfection, spreading through respiratory droplets, direct contact, and the fecal-oral route1.

The infection typically manifests through symptoms affecting the respiratory tract, digestive system, and eyes, frequently accompanied by recurring high fevers1. Adenoviral infections of types 3 and 7 are the main culprits behind swimming pool fever, though newer genetic variants including type 114 have emerged in recent years1. The incubation period averages three to eight days, with a minimum of approximately two days and a maximum reaching three weeks1. Health expert Li Dong suggested that parents should seek immediate medical attention if their child experiences persistent high fever exceeding three days, or displays symptoms such as rapid breathing, lethargy, significantly decreased appetite, or obvious signs of dehydration1.

The virus presents formidable disinfection challenges in aquatic environments. Adenovirus can survive approximately 10 days at room temperature, persist for months at 4°C, and requires continuous heating at 56°C for at least 30 minutes to be inactivated1. While national standards mandate that artificial swimming pools maintain free chlorine residuals between 0.3 and 1.0 milligrams per liter, adenovirus demonstrates resistance to chlorine-based disinfectants—free chlorine levels below 0.2 mg/L prove essentially ineffective against the virus1. The pathogen remains insensitive to standard alcohol-based sanitizers and requires either chlorine-containing disinfectants or ultraviolet radiation for effective elimination1. Past outbreaks underscore the infection's capacity for rapid spread in recreational swimming settings, including a 2011 incident at a sports school in Changtai County, Fujian Province, which reported over 20 confirmed cases, and a 2013 cluster in Conghua, Guangdong1.