The CDC reports this evening that another 50 have been added to the Foster Farm’s illness column since April 2014.

Since March 1, 2013, a total of 574 individuals infected with the outbreak strains of Salmonella Heidelberg have been reported from 27 states and Puerto Rico. Most of the ill persons (76%) have been reported from California. The number of ill persons identified in each state is as follows: Alaska (1), Arkansas (1), Arizona (25), California (441), Colorado (9), Connecticut (1), Delaware (1), Florida (4), Georgia (1), Hawaii (1), Idaho (5), Illinois (1), Kentucky (1), Louisiana (1), Michigan (4), Missouri (5), Montana (1), North Carolina (1), Nevada (11), New Mexico (2), Oregon (14), Puerto Rico (1), Tennessee (1), Texas (13), Utah (6), Virginia (4), Washington (17), and Wisconsin (1).

37% of ill persons have been hospitalized, and no deaths have been reported. Most ill persons (77%) have been reported from California.

Epidemiologic, laboratory, and traceback investigations conducted by local, state, and federal officials indicate that consumption of Foster Farms brand chicken is the likely source of this outbreak of Salmonella Heidelberg infections.

The outbreak strains of Salmonella Heidelberg are resistant to several commonly prescribed antibiotics. Although these antibiotics are not typically used to treat Salmonella bloodstream infections or other severe Salmonella infections, antibiotic resistance can be associated with increased risk of hospitalization in infected individuals.