The Interagency Food Safety Analytics Collaboration (IFSAC) are out with their attribution (what foods are likely to be contaminated) for 2018.  Here is the full report: P19-2018-report-TriAgency-508

Here is the Summary:

Salmonella illnesses came from a wide variety of foods. More than 75% of Salmonella illnesses were attributed to seven food categories: Chicken, Seeded Vegetables