Canning Michelle, Ablan Michael, Crawford Tamara N, Conrad Amanda, Busbee Alexandra, Robyn Misha, Marshall Katherine E
Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention. 1600 Clifton Rd NE MS-H24-10, Atlanta, GA 30333, USA; Oak Ridge Institute for Science and Education, 1299 Bethel Valley Rd, Oak Ridge, TN 37830, USA.
Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention. 1600 Clifton Rd NE MS-H24-10, Atlanta, GA 30333, USA.
J Food Prot. 2025 Feb 3;88(2):100440. doi: 10.1016/j.jfp.2024.100440. Epub 2024 Dec 20.
Listeria monocytogenes causes listeriosis, a serious infection with a high mortality rate for persons at higher risk for listeriosis. The first Listeria outbreak linked to frozen vegetables occurred in 2016 and resulted in three deaths. Many frozen vegetables are intended to be consumed after cooking. However, data on consumer behavior are sparse. We characterized consumers' perceptions of contamination of prepackaged frozen vegetables, and preparation methods of prepackaged frozen vegetables to help inform prevention strategies. During September 1-24, 2022, Porter Novelli Public Services conducted the FallStyles survey using the Ipsos KnowledgePanel. Data were weighted to be representative of the U.S. population. Point estimates and 95% CIs were calculated, and differences between respondents were determined using Wald chi square tests. Among 3,008 respondents reporting a preparation and consumption method for frozen vegetables, 8.7% (95% CI = 7.4-10.0%) reported ever consuming the product raw. Respondents who reported having children < 18 years old were more likely to report ever consuming frozen vegetables raw compared with respondents who did not (12.5% vs. 7.4%, p < 0.01). The most reported raw preparation method was adding them directly to a blender for smoothie or juice (5.6%; 95% CI = 4.6-6.7%). Among respondents who reported eating frozen vegetables, 59.6% (95% CI = 57.6-61.6%) reported following package instructions. A third (34.1% [95% CI = 32.2-35.9%]) of respondents agreed that frozen vegetables can be contaminated with germs (like Salmonella, E. coli, and Listeria), with a greater proportion of people with cancer disagreeing compared to those without cancer (32.5% vs 23.4%, p = 0.041). These findings show that some consumers may not be cooking frozen vegetables before eating them. Second, consumers might not be reading instructions on packaging. Both findings highlight the critical importance of preventive controls in the production of frozen vegetables prior to reaching the consumer.
单核细胞增生李斯特菌可引发李斯特菌病，对于感染李斯特菌病风险较高的人群来说，这是一种死亡率很高的严重感染病。首例与冷冻蔬菜相关的李斯特菌疫情爆发于2016年，导致3人死亡。许多冷冻蔬菜打算在烹饪后食用。然而，关于消费者行为的数据却很稀少。我们对消费者对预包装冷冻蔬菜污染情况的认知以及预包装冷冻蔬菜的制备方法进行了特征描述，以帮助制定预防策略。2022年9月1日至24日期间，波特诺维利公共服务公司使用益普索知识面板进行了秋季风尚调查。数据经过加权处理以代表美国人口。计算了点估计值和95%置信区间，并使用Wald卡方检验确定了受访者之间的差异。在3008名报告冷冻蔬菜制备和食用方法的受访者中，8.7%（95%置信区间=7.4%-10.0%）报告曾生食过该产品。与没有18岁以下子女的受访者相比，报告有18岁以下子女的受访者更有可能报告曾生食冷冻蔬菜（12.5%对7.4%，p<0.01）。最常报告的生食制备方法是直接将它们加入搅拌机中制作奶昔或果汁（5.6%；95%置信区间=4.6%-6.7%）。在报告食用冷冻蔬菜的受访者中，59.6%（95%置信区间=57.6%-61.6%）报告遵循包装说明。三分之一（34.1%[95%置信区间=32.2%-35.9%]）的受访者认为冷冻蔬菜可能被病菌（如沙门氏菌、大肠杆菌和李斯特菌）污染，与没有癌症的人相比，患有癌症的人中不同意这一观点的比例更高（32.5%对23.4%，p=0.041）。这些发现表明，一些消费者在食用冷冻蔬菜前可能没有进行烹饪。其次，消费者可能没有阅读包装上的说明。这两个发现都凸显了在冷冻蔬菜到达消费者之前的生产过程中进行预防控制的至关重要性。
