近日，广东多地迎持续强降雨天气，随着大雨逐渐停止，多地街道路面上出现大蜗牛。
Following days of heavy rainfall across multiple cities in Guangdong province, residents have reported an unusual sight: large numbers of oversized snails crawling on streets as the downpours subsided.
这种“大蜗牛”到底有多大？有网友发出了对比图：
还有不少人出于好奇，徒手抓了起来。
网友纷纷提醒：千万别碰！这是非洲大蜗牛！有毒！
非洲大蜗牛是什么？
非洲大蜗牛，又名褐云玛瑙螺、非洲巨螺等，被列入了《中国第一批外来入侵物种名单》。因其平常只敢在草丛中潮湿处活动，到路上可能会干死，晒死，下雨后它才敢到处爬。
The giant land snail (Lissachatina fulica) typically hide in damp grass or soil to avoid drying out or dying due to too much sunlight. Heavy rains create moist conditions that allow them to venture into open areas.
这种非洲大蜗牛喜欢吃农作物、林木、蔬菜和花卉等植物，可危害500多种作物，是国家进出境二类检疫性有害生物。同时，它也是许多人畜寄生虫和病原菌的中间宿主，会传播结核病和嗜酸性脑膜炎。
They prefer to devour crops, trees, vegetables and ornamental plants, damaging over 500 types of vegetation. Classified as a Category II quarantine pest for import plants, giant land snails also act as carriers for parasites and pathogens, including tuberculosis and eosinophilic meningitis.
同时，其身上携带多种细菌，用手触摸，会引起皮炎、皮肤瘙痒、肿胀等。
They carry multiple bacteria, and having direct contact may lead to skin irritation, itching, swelling or dermatitis.
图源：好奇博士
非洲大蜗牛身上最常见的寄生虫是广州管圆线虫，这种寄生虫会往人体的中枢神经或脑脊液里“钻”，一旦感染，患者会不断发热、头痛，引发脑膜炎，严重的还会危及生命。
如何清除非洲大蜗牛？
据了解，非洲大蜗牛一次可以产下30到700粒卵，繁殖速度很快，它爬行的地方会留下黏液，而黏液本身就携带着病原体，甚至在它们的粪便中，依旧存活着病菌和寄生虫。如不小心踩到，要及时做好清洗工作。
The giant land snails reproduce rapidly, laying 30–700 eggs at a time. Their trails of mucus and feces may harbor pathogens. Individuals who step on a snail are urged to wash immediately to eliminate any potential pathogens they made have unconsciously come in contact with.
如在小区发现数量较多的“大蜗牛”，可以找物业公司进行处理，或者找专业的杀虫公司处理。如果在家里发现少数蜗牛，可利用家中的食盐处理。蜗牛被撒食盐后，软体部分会融化成水而死亡。
If a large number of giant land snails are found in your residential community, contact the property management company or hire a professional pest control company for removal.
If you spot a few snails indoors, use table salt to eliminate them. When sprinkled with salt, the snail's soft body will dehydrate, melting into a liquid before ultimately dying.
编辑：黎霈融
实习生：赵苑如
来源：央视新闻 深圳疾控 南方都市报
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