The US Centers for Disease Control and Prevention (CDC) is collaborating with Federal and state health authorities to investigate an outbreak of Shiga toxin-producing E. coli O157:H7 infection that has affected at least 26 people in three states.
Six of the reported cases have been hospitalised and two have developed potentially serious haemolytic uraemic syndrome (HUS). The genetic fingerprint of the outbreak strain of E. coli is unusual and has not been previously reported in the USA.
The outbreak investigation has established an epidemiological link with consumption of ready-to-eat salads. Two products, Field Fresh Chopped Salad with Grilled Chicken and Mexicali Salad with Chili Lime Chicken, produced by Glass Onion Catering in California and sold at Trader Joe’s grocery outlets, are considered “one likely source of this outbreak.” On 10 November, Glass Onion Catering recalled approximately 181,629 pounds of ready-to-eat salads and sandwich wrap products because of possible contamination with E. coli O157:H7.
The investigation is on going and more information can be found here.