The Salad-Bar Bioterror Plot

In the fall of nineteen eighty-four, something unprecedented unfolded in the small city of The Dalles, Oregon. It would remain, for decades, the largest bioterrorist attack ever carried out on American soil, and it began not with a weapon but with a salad bar.

The Rajneeshees were followers of Indian guru Bhagwan Shree Rajneesh, who had established a commune called Rajneeshpuram in the high desert about forty-five miles south of here. By nineteen eighty-four, the commune's leadership, directed by Rajneesh's personal secretary Ma Anand Sheela, was in a deepening conflict with Wasco County residents and officials. The Rajneeshees had tried to swing the upcoming county elections in their favor, first through a program called Share-a-Home, busing thousands of homeless people to the commune to register as voters. When that tactic failed legal scrutiny, Sheela's inner circle turned to something more sinister.

Operatives from the commune cultivated Salmonella typhimurium bacteria in makeshift laboratories at Rajneeshpuram. Then, between September ninth and seventeenth of nineteen eighty-four, they visited ten restaurants in The Dalles and contaminated salad bars with the pathogen. The plan was simple: sicken enough voters to suppress turnout and tip the election to Rajneeshee candidates.

Seven hundred fifty-one people fell ill. Forty-five were hospitalized with severe diarrhea, fever, and vomiting. No one died, but an entire community was shaken to its core.

Investigators from the Centers for Disease Control initially attributed the outbreak to poor food-handling practices. It was not until the following year, when the commune collapsed amid internal power struggles and criminal confessions, that the full truth emerged. Sheela and a co-conspirator pleaded guilty in nineteen eighty-six and received federal prison sentences.

The attack reframed how public-health officials and law-enforcement agencies think about biological threats from domestic actors. It demonstrated that the nightmare of bioterrorism was not hypothetical. It had already happened, at a Taco Time and a Sizzler, in a place most Americans had never heard of.