The Washington State Department of Health said testing shows a link to the slaughter facility in Graham where the outbreak strain was found.
Kapowsin Meats has recalled 116,262 pounds of whole hogs that could be contaminated.
Whole hogs for barbeque items were produced between April 18 and July 27.
Product was shipped to individuals, retail locations, institutions, and distributors in Alaska and Washington.
The business, regulated by the US Department of Agriculture Food Safety and Inspection Service, has cooperated with the investigation and there may be other sources with work continuing to find the origin of the Salmonella bacteria.
Exposure for many of the ill people was whole roasted pigs, served at private events and restaurants.
The 134 cases include residents of Clark (2), Cowlitz (1), Grays Harbor (1), King (84), Kitsap (1), Mason (2), Pierce (12), Snohomish (24), Thurston (2), and Yakima (5) counties.
Meanwhile, the outbreak of cyclospora has sickened 457 people in 29 states with 16 hospitalizations, according to the Centers for Disease Control and Prevention (CDC).
Most of these people—275 (60%) experienced onset of illness on or after May 1.
Cluster investigations in Wisconsin and Texas have preliminarily identified cilantro as a suspect vehicle.
- Article updated to include the recall by Kapowsin Meats