美国疾病控制与预防中心（CDC）周二发布报告，称至少 49 人在 10 个州因食用麦当劳四分之一磅牛肉汉堡而感染大肠杆菌，其中一人死亡，10 人住院。感染病例发生在 9 月 27 日至 10 月 11 日之间，涉及科罗拉多州、爱荷华州、堪萨斯州、密苏里州、蒙大拿州、内布拉斯加州、俄勒冈州、犹他州、威斯康星州和怀俄明州。科罗拉多州病例最多，为 26 例，其次是内布拉斯加州，为 9 例。CDC 表示，所有与疫情相关的受访者都报告在生病前曾在麦当劳就餐，大多数人提到吃了四分之一磅牛肉汉堡。美国农业部、食品药品监督管理局和州卫生官员也在进行调查。目前尚未确定具体成分为致病源，但调查人员将重点放在洋葱和牛肉上。FDA 的初步调查表明，汉堡上使用的切碎洋葱可能是污染源。美国农业部正在调查汉堡肉饼。麦当劳官员在一份声明中表示，初步调查结果表明，一些疾病与来自单个供应商的洋葱有关。该公司已停止分发切碎洋葱，并暂时从受影响州以及爱达荷州、内华达州、新墨西哥州和俄克拉荷马州的部分地区菜单中撤下四分之一磅牛肉汉堡。声明称：“我们非常重视食品安全，这是应该做的事情。”大肠杆菌细菌存在于动物的肠道中，并在环境中发现。感染会导致严重疾病，包括发烧、腹痛和血性腹泻。出现大肠杆菌中毒症状的人应立即寻求医疗保健，并告知医生他们吃了什么。这一消息发布之际，总部位于芝加哥的麦当劳连锁店正经历艰难的一年。由于通货膨胀，消费者减少外出就餐或选择更便宜的选择，导致该公司第二季度的全球同店销售额近四年来首次下降。该公司对此做出了回应，在 6 月底推出了 5 美元的套餐，该套餐最近延长至 12 月。该套餐不包括四分之一磅牛肉汉堡。在 CDC 发布声明后，麦当劳股价在盘后交易中下跌了 9%。导致此次疫情的细菌类型是大肠杆菌 O157:H7，该细菌每年在美国造成约 74,000 例感染，导致 2,000 多人住院和 61 人死亡。感染对 5 岁以下儿童尤其危险，会导致急性肾衰竭。

🦠 **疫情概述**：美国疾病控制与预防中心（CDC）报告，至少 49 人在 10 个州因食用麦当劳四分之一磅牛肉汉堡而感染大肠杆菌，其中一人死亡，10 人住院。感染病例发生在 9 月 27 日至 10 月 11 日之间，涉及科罗拉多州、爱荷华州、堪萨斯州、密苏里州、蒙大拿州、内布拉斯加州、俄勒冈州、犹他州、威斯康星州和怀俄明州。科罗拉多州病例最多，为 26 例，其次是内布拉斯加州，为 9 例。

🔍 **调查方向**：所有与疫情相关的受访者都报告在生病前曾在麦当劳就餐，大多数人提到吃了四分之一磅牛肉汉堡。美国农业部、食品药品监督管理局和州卫生官员正在进行调查。目前尚未确定具体成分为致病源，但调查人员将重点放在洋葱和牛肉上。FDA 的初步调查表明，汉堡上使用的切碎洋葱可能是污染源。美国农业部正在调查汉堡肉饼。

🍔 **麦当劳的回应**：麦当劳官员在一份声明中表示，初步调查结果表明，一些疾病与来自单个供应商的洋葱有关。该公司已停止分发切碎洋葱，并暂时从受影响州以及爱达荷州、内华达州、新墨西哥州和俄克拉荷马州的部分地区菜单中撤下四分之一磅牛肉汉堡。

⚠️ **大肠杆菌的危害**：大肠杆菌细菌存在于动物的肠道中，并在环境中发现。感染会导致严重疾病，包括发烧、腹痛和血性腹泻。出现大肠杆菌中毒症状的人应立即寻求医疗保健，并告知医生他们吃了什么。

E. coli food poisoning linked to McDonald’s Quarter Pounder hamburgers has sickened at least 49 people in 10 states, including one person who died and 10 who were hospitalized, federal health officials said Tuesday.The death was reported in an older person in Colorado, and one child has been hospitalized with severe kidney complications, the U.S. Centers for Disease Control and Prevention reported.Infections were reported between Sept. 27 and Oct. 11, in Colorado, Iowa, Kansas, Missouri, Montana, Nebraska, Oregon, Utah, Wisconsin and Wyoming. Colorado has the most cases, 26, followed by Nebraska with nine.Everyone interviewed in connection with the outbreak had reported eating at McDonald’s before falling ill and most mentioned eating Quarter Pounder hamburgers, the CDC said. The U.S. Agriculture Department, the Food and Drug Administration and state health officials are also investigating.A specific ingredient has not been identified as the cause, but investigators are focused on onions and beef. A preliminary FDA investigation suggests that slivered onions served on the burgers are a likely source of contamination. The USDA is investigating the hamburger patties.In a statement, McDonald’s officials said that initial findings suggest that some illnesses are linked to onions sourced from a single supplier. The company has halted distribution of the slivered onions and temporarily removed the Quarter Pounder from menus in the affected states, and also in portions of Idaho, Nevada, New Mexico and Oklahoma.“We take food safety extremely seriously and it’s the right thing to do,” the statement said.E. coli bacteria are harbored in the guts of animals and found in the environment. Infections can cause severe illness, including fever, stomach cramps and bloody diarrhea. People who develop symptoms of E. coli poisoning should seek health care immediately and tell the provider what they ate.The news comes in an already tough year for the Chicago-based McDonald’s chain. Its global same-store sales fell for the first time in nearly four years in the second quarter as inflation-weary customers skipped eating out or chose cheaper options. The company responded with a $5 meal deal, which was introduced at U.S. restaurants in late June and was recently extended through December. The deal doesn’t include the Quarter Pounder.McDonald’s shares dropped 9% in after-hours trading Tuesday after the CDC’s announcement.The type of bacteria implicated in this outbreak, E. coli O157:H7, causes about 74,000 infections in the U.S. each year, leading to more than 2,000 hospitalizations and 61 deaths. Infections are especially dangerous for children younger than 5 and can cause acute kidney failure.___Associated Press writer Dee-Ann Durbin in Detroit contributed to this story.