As of February 28, 2018, 40 people infected with the outbreak strain of Salmonella I 4,[5],12:b:- have been reported from 27 states.
Illnesses started on dates ranging from October 10, 2017 to February 13, 2018. Ill people range in age from 6 to 67 years, with a median age of 41. Sixty percent of ill