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-  2018 

Parasites of importance for human health on edible fruits and vegetables in Nigeria: a systematic review and meta-analysis of published data

DOI: 10.1080/20477724.2018.1425604

Keywords: Fruits, human health, Nigeria, parasites, vegetables

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Abstract:

Contamination of edible fruits and vegetables is now a global public health issue despite their health benefits as non-pharmacological prophylaxis against chronic diseases. Studies that will harness the extent of parasitic contaminations will ensure public health protection. Here, the prevalence and distribution of parasites of importance for human health on fruits and vegetables in Nigeria were determined through a systematic review and meta-analysis of published data. The random-effects model was used to determine pooled prevalence estimate (PPE). Heterogeneity was evaluated by the Cochran’s Q-test. Parasites overall PPE of 32.4% (95% CI: 0.73, 0.91) was observed from 19 eligible studies reported across 13 Nigerian states. Sub-groups PPEs ranged between 3.5% (95% CI: 0.45, 1.86) and 58.5% (95% CI: 1.40, 4.09). A high degree of heterogeneity 97.53% (95% CI: 0.30, 0.46, P: 0.000) was observed within studies and sub-groups. Cryptosporidium species were the most prevalent, while Ancylostoma duodenale and Ascaris lumbricoides had the widest geographical distribution. Pineapple (Prev: 41.3%, 95% CI: 0.40, 0.75) and lettuce (Prev: 51.5%, 95% CI: 0.37, 0.68) recorded the highest level of parasitic contamination. Parasites of importance for human health are prevalent on edible fruits and vegetables in Nigeria. Prevalence estimates were highest in the South-eastern region and during the most recent decade. Adequate washing of fruits and vegetables, on-farm irrigation of vegetables using good sources of water and adequate hygiene by food handlers will help the general public to maximize the health benefits associated with the intake of fruits and vegetables while minimizing the risk of acquiring parasitic infections

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