The samples were taken back to a microbiology laboratory and processed. Bacteriological tests were undertaken to screen for the presence or absence of specific pathogens associated with food borne illnesses.
It was found that just under one quarter (24.1 percent) showed the presence of for E. coli and one sample tested positive for Salmonella. The Salmonella sample was from parsley. Salmonellae are found worldwide in both cold-blooded and warm-blooded animals, and in the environment. They cause illnesses such as typhoid fever, paratyphoid fever, and food poisoning. Most E. coli strains are harmless, but some serotypes are pathogenic and can cause serious food poisoning in humans. Food poisoning caused by E. coli can result from eating unwashed vegetables or poorly butchered and under-cooked meat