美国疾病控制与预防中心（CDC）周五宣布，美国历史上最大规模的环孢子虫多州疫情已正式结束1。此次疫情与来自墨西哥中部泰勒农场的污染冰山生菜有关，共导致12,883人感染，分布在21个州，造成570人住院和2人死亡1。该疫情于2024年5月1日至9月8日期间报告，其中密歇根州受影响最严重，确诊超过14,000例并有2人死亡1。
疫情暴发期间，感染人数一度每天超过1,000例，随后于8月降至每天平均少于2例1。患者中位年龄为46岁，女性患者占56%，男性患者占44%1。环孢子虫感染者通常出现腹泻、食欲不振、体重减轻、胃痉挛、腹胀、恶心、头痛和低烧等症状1。
CDC表示，所有相关产品的有效期已过期，不再在商店或餐厅销售，感染风险已消除1。为预防环孢子虫感染，CDC建议公众保持手部卫生，用流动水彻底冲洗新鲜农产品，切除受损部分，并将食品加热至58°C（158°F）以上1。美国食品药品监督管理局（FDA）正继续调查泰勒农场及其他环孢子虫聚集疫情1。
The Centers for Disease Control and Prevention announced Friday that the largest cyclospora outbreak in US history has ended.1 The outbreak, linked to contaminated iceberg lettuce processed by Taylor Fresh Foods, a company operating in central Mexico, infected 12,883 people across 21 states, resulting in 570 hospitalizations and 2 deaths.1 All affected products have expired and are no longer available for purchase in stores or restaurants, eliminating the risk of further infections.1
The outbreak occurred between May 1 and September 8, 2024, with cases reported across 49 states and Washington DC, though Michigan experienced the most severe impact with over 14,000 cases and 2 fatalities.1 At its peak, the outbreak caused more than 1,000 infections daily, though by August the rate had declined to an average of fewer than 2 cases per day.1 The median age of patients was 46 years old, with women comprising 56 percent of cases and men 44 percent.1
Common symptoms included diarrhea, loss of appetite, weight loss, stomach cramps, bloating, nausea, headaches, and low fever.1 The CDC recommends handwashing, thoroughly rinsing fresh produce under running water, removing damaged portions, and heating food to 158 degrees Fahrenheit or higher to prevent infection.1 The FDA continues investigating Taylor Fresh Foods and other cyclospora cluster outbreaks.1
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