To the Editor: Sparganosis is a worldwide parasitic zoonosis caused by infection with spargana, the ple-rocercoid larvae of various diphyllo-bothroid tapeworms belonging to the genus Spirometra (1–3). Sparganosis poses a serious threat to human health; the spargana invade mainly the brain, eye, abdominal cavity, spinal cord, and subcutaneous tissues; can damage local tissues; and can cause blindness, paralysis, and even death (4,5).In the People's Republic of China, sparganosis has emerged as an impor-tant foodborne parasitic disease, with ≈1,000 human cases reported in 22 provinces during 1927–2007. Guang-dong Province has the most cases (6). Persons in Guangdong Province eat frog meat and place frog poultices made from raw frog meat on open wounds and lesions, which facilitates human infection with spargana. To as-sess the risk for human infection with sparganosis in this province and to strengthen public food safety aware-ness, we conducted a comprehensive investigation of spargana infection in frogs, the second intermediate host of Spirometra.By necropsy we examined for spargana 544 frogs (446 Rana ni-gromaculata and 98 R. tigrina) from Yunfu, Maoming, and Zhanjiang in western Guangdong Province during October 2007–October 2008 (7). Of these 544 frogs, 455 were wild, and 89 were aquacultured. Spargana were found in 27.3% (124/455) of examined wild frogs; of these, 30.0% (107/357) were R. nigromaculata, significantly more (p<0.05) than the 17.3% (17/98) that were R. tigrina. This finding sug -gests that R. nigromaculata is the main intermediate host of Spirometra in western Guangdong Province
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机译：致编者：分布性寄生虫病是一种由寄生虫感染引起的寄生虫人畜共患病，该寄生虫是Spirometra属（1-3）的多种双叶拟除虫tape虫的百乐类幼虫。子囊肿对人类健康构成严重威胁; Spargana主要侵袭大脑，眼睛，腹腔，脊髓和皮下组织。会损伤局部组织;并可能导致失明，麻痹甚至死亡（4,5）。在中国，石笋病已成为一种重要的食源性寄生虫病，在1927年至2007年期间，在22个省中报告了约1,000例人类感染病例。广东省的病例最多（6）。广东省的人们吃青蛙肉，并将由青蛙生肉制成的青蛙膏药放在开放的伤口和病变处，这有利于人类感染斯帕迦。为了评估该省人类感染斯巴特霉病的风险并增强公众食品安全意识，我们对Spirometra的第二个中间宿主青蛙中的石斑鱼感染进行了全面调查。通过尸检，我们检查了544头青蛙2007年10月至2008年10月，来自广东省西部的云浮，茂名和湛江的446（Rana ni-gromaculata和98 R. tigrina）（7）。在这544只青蛙中，有455只是野生的，有89只是养殖的。在27.3％（124/455）的野生青蛙中发现了Spargana。其中30.0％（107/357）是黑腹果蝇，比底格里纳河虎17.3％（17/98）多得多（p <0.05）。这一发现表明，R。nigromaculata是广东省西部螺旋藻的主要中间寄主。
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