Investigations have been carried out into possible links between the cases. Consumption of cooked ham from small independent butchers has been identified as a potential common link to the illness.
Testing has been carried out on ham supplied to a number of butchers identified in the investigation. No trace of salmonella has been found, but other hygiene issues were identified that led to one supplier voluntarily withdrawing certain batches of ham. Investigations are on-going.
Salmonella food poisoning is usually caused by eating contaminated raw or undercooked food such as meat, eggs, and dairy products. Symptoms can include diarrhoea, stomach cramps, vomiting and fever.