Four Children Reportedly Remain Hospitalized With A Serious Illness After Exposure To E. Coli. They Are Among Seven Others Who Have Been Hospitalized After Elementary Students Visited An Animal Exhibit At The Fairgrounds In Gray In Late September. The Northeast Regional Health Office And The Sullivan County Regional Health Department Are Investigating Cases Of Illness Caused By Shiga-Toxin Producing E. Coli. It Involved Children In Washington And Sullivan Counties.