1984 Rajneeshee bioterror attack
In 1984, 751 people suffered food poisoning in The Dalles, Oregon, US due to the deliberate contamination of salad bars at ten local restaurants with "Salmonella". A group of prominent followers of Rajneesh (later known as Osho) led by Ma Anand Sheela had hoped to incapacitate the voting population of the city so that their own candidates would win the 1984 Wasco County elections. The incident was the first and is the single largest bioterrorist attack in United States history.