Day care centers and some schools in Hamilton County are being warned about a possible outbreak of a childhood stomach illness.

After seeing an unexpected early increase in shigella and shigellosis, the Hamilton County Health District decided to issue a warning letter.

It's now sending out warning notices to day care centers and some schools warning them about shigella or shigelliosis.

It's a bacterial illness that mainly causes diarrhea.

The health district said so far it has 25 shigella cases reported this year, with several of them coming from one day care center.

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