IMPACT OF STORAGE CONDITIONS ON ENTAMOEBA HISTOLYTICA AND GIARDIA LAMBLIA CONTAMINATIONS IN ONIONS SOLD IN AZARE, BAUCHI STATE

ABSTARCT Foodborne protozoan parasites such as Entamoeba histolytica and Giardia lamblia pose significant public health risks, particularly in developing regions where food hygiene and storage practices are often inadequate. This study investigated the impact of storage conditions on the contamination of onions sold in Azare, Bauchi State. A cross-sectional experimental design was employed, where onion samples were collected from local markets and subjected to varying storage conditions, including open display, refrigeration, and covered storage. Microscopic examination revealed that onions stored under open and unhygienic conditions showed a higher prevalence of E. histolytica and G. lamblia cysts, while refrigeration and proper covering significantly reduced contamination levels. The findings highlight the role of post-harvest handling and storage practices in controlling parasitic contamination of fresh produce. The study concludes that improved onion storage and consumer awareness are crucial in minimizing foodborne protozoan infections. It recommends public health education and enforcement of hygienic market practices to ensure food safety in the community.