An investigation of students collective vomiting and diarrhea after a meal
has produced a preliminary report in Fengqiu County in central China's Henan Province.
Based on clinical and lab test results, the report determines the incident was a food-borne disease case.
Three students are still receiving treatment in a hospital, while the others have recovered.
Four officials involved have been suspended.
Another investigation will also be conducted into the business practices of the companies involved.
The collective vomiting and diarrhea incident was reported Thursday in Fengqiu County,
soon after the county established a joined investigation team and requested the catering company immediately stop serving meals.