Complex sentence: It is the largest reported salmonellosis outbreak in the United States since 1985, with the worst outbreaks occurring in Texas (356 reported cases), New Mexico (95), Illinois (91), and Arizona (45).
Split into simpler sentences: It is the largest reported salmonellosis outbreak in the United States since 1985. The greatest number of reported cases have occurred in Texas (356 reported cases), New Mexico (95), Illinois (91), and Arizona (45).