美国食品药品监督管理局（FDA）宣布，此前在冰山生菜样本中检出环孢子虫的结果为假阳性，确切感染源仍未确定 1。尽管源头未明，供应商泰勒农场（Taylor Farms）已自愿从美国市场撤下所有来自墨西哥中部地区的冰山生菜 1，并列出受影响产品清单。FDA指出被检测的样本并非泰勒农场周五宣布的当前召回产品的一部分 1。
这场疫情已在美国五个州引发广泛传播 12。根据疾控中心（CDC）报告，密歇根州报告超过5,000例病例，北卡罗来纳州报告超过300例 2。受影响的州包括印第安纳、肯塔基、密歇根、俄亥俄和西弗吉尼亚 12。目前至少有94人因环孢子虫病住院，但无死亡报告 1。
快餐连锁泰可钟（Taco Bell）已在其餐厅完成受影响生菜产品的清除工作 1，并已无限期从全国供应链中移除该受影响成分，将在24小时内更换 2。CDC建议上述五个州居民不要食用泰可钟提供的碎冰山生菜 1。
The U.S. Food and Drug Administration announced that a previous test identifying iceberg lettuce from supplier Taylor Farms as the source of a cyclospora parasite outbreak was a false positive, leaving the actual source of the infection still undetermined 1. Despite the inconclusive test result, Taylor Farms voluntarily withdrew all iceberg lettuce sourced from central Mexico from the U.S. market 12, and fast-food chain Taco Bell has completed removal of affected products from its restaurants 1.
The cyclospora outbreak has affected at least five states—Indiana, Kentucky, Michigan, Ohio, and West Virginia 12. Michigan has reported over 5,000 cases, while North Carolina has reported over 300 cases 2. At least 94 people have been hospitalized due to cyclospora infection, though no deaths have been reported 1.
The Centers for Disease Control and Prevention warned consumers in the affected states to avoid shredded iceberg lettuce provided by Taco Bell 1. Taco Bell stated it has indefinitely removed the affected ingredient from its national supply chain and will replace it within 24 hours 2.
The FDA clarified that the recalled sample tested was not part of Taylor Farms' current recall announcement 1. Taylor Fresh Foods, the company linked to the outbreak, confirmed that an associated independent farm in Mexico was identified as connected to the contamination 2.
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