For the study, 14 samples were selected and purchased from different markets. From microbial analysis resulted the presence of both pathogens.
These results show the poor attention for the good hygiene practices implementation both in field and during postharvest handling. The presence of Escherichia coli and coliforms is due to the contaminated irrigation water and improper manure supply, while the presence of Salmonella is due to the poor hygienic conditions of operators.
The authors conclude highlighting the need of microbial quality evaluation of fresh vegetables to reduce their contamination.
Source: Odu Ngozi Nma, Okomuda Mary Oruese, "Prevalence of Salmonella species and Escherichia coli in fresh Cabbage and Lettuce sold in Port Harcourt Metropolis, Nigeria", Report and Opinion, 2013, 5(3):1-8. http://www.sciencepub.net/report/report0503/001_16368report0503_1_8.pdf