Council for Scientific and Industrial Research-Water Research Institute, Achimota P.O. Box AH 38, Ghana.
Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Private Mail Bag, University Post Office, KNUST, Kumasi, Ghana.
Int J Environ Res Public Health. 2022 Oct 5;19(19):12722. doi: 10.3390/ijerph191912722.
Safety of the environment in which vegetables are grown, marketed and consumed is paramount as most are eaten raw. Irrigation sources include open drains and streams, which are often contaminated with human and animal waste due to poor sanitation infrastructure. In irrigated vegetable farms using such sources in Ghana, we assessed counts, antibiotic resistance patterns and resistant genes on irrigated lettuce.
A cross-sectional study was conducted between January-May 2022, involving five major vegetable farms in Ghana.
was found in all 25 composite lettuce samples analyzed. Counts expressed in CFU/g ranged from 186 to 3000, with the highest counts found in lettuce irrigated from open drains (1670) and tap water using hose pipes (3000). Among all bacterial isolates, resistance ranged between 49% and 70% for the Watch group of antibiotics, 59% for the Reserved group and 82% were multidrug-resistant. Of 125 isolates, 60 (48%) were extended-spectrum beta-lactamase-producing, of which five (8%) had the -resistant gene.
Lettuce was contaminated with with high levels of antibiotic resistance. We call on the Ghana Ministry of Food and Agriculture, Food and Drugs Authority and other stakeholders to support farmers to implement measures for improving vegetable safety.
种植、销售和食用的蔬菜环境安全至关重要，因为大多数蔬菜都是生食的。灌溉水源包括开放的排水沟和溪流，由于卫生基础设施差，这些水源经常受到人类和动物粪便的污染。在加纳使用这些水源的灌溉蔬菜农场中，我们评估了灌溉生菜上的计数、抗生素耐药模式和耐药基因。
这是一项在 2022 年 1 月至 5 月期间进行的横断面研究，涉及加纳的五个主要蔬菜农场。
在分析的 25 个复合生菜样本中均发现了 。以 CFU/g 表示的计数范围为 186 至 3000，在从开放排水沟灌溉的生菜（1670）和使用软管的自来水中发现的计数最高（3000）。在所有细菌分离株中，Watch 组抗生素的耐药率在 49%至 70%之间，Reserved 组为 59%，耐多药率为 82%。在 125 个分离株中，有 60 个（48%）产生了超广谱β-内酰胺酶，其中 5 个（8%）携带-耐药基因。
生菜受到了 的污染，且具有很高的抗生素耐药性。我们呼吁加纳粮食和农业部、食品和药物管理局和其他利益攸关方支持农民采取措施提高蔬菜安全性。
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