The US Centers for Disease Control and Prevention (CDC) is investigating a large and long-running outbreak of Salmonella Heidelberg infection, which has been linked to a specific brand of chicken.
The outbreak has affected at least 124 people across 12 states since early June last year. Approximately 32% of cases have required hospital treatment, but no deaths have been recorded.
Most of the cases have been reported in just two states, Washington and Oregon. The authorities in both states have identified Foster Farms brand chicken as the most likely source of the cases they are investigating.