Four members of 4-H participating in the Minnesota State Fair were confirmed to have H1N1 influenza, and about 120 members were sent home by group officials Thursday.

Thirteen other 4-H members who shared similiar symptoms were tested, and the results of the testing will be known as soon as Friday, 4-H Superintendent Brad Rugg said in a letter to 4-H families.

The H1N1 influenza symptoms were first recognized among the organization’s livestock delegation after the 4-H Livestock Encampment ended Sunday. The flu-like sypmtoms were reported to the Minnesota Department of Health on Monday.

Many members of the state Arts-in and the state 4-H ambassadors groups had flu-like symptoms, and all members of these groups will be returning home early.

Other precautions taken included expanding the nursing staff, which will conduct regular health screenings, and creating more hand sanitizing opportunities, Ruggs said in the letter.