The Idaho Department of Health and Welfare in a statement Wednesday says an initial investigation found the outbreak might be connected to people eating raw clover sprouts from Evergreen Fresh Sprouts of Idaho.
Officials are recommending people not eat raw clover sprouts from the company until additional information is known.
Health officials say two of those hospitalized are Kootenai County residents in Idaho and three are from Washington state. There have been no deaths.
Nine of the 10 who became ill reported eating the raw clover sprouts.