Florence-Carlton School District administrators tell us the 35 students who went home sick with a stomach virus Thursday were not back in class today.

Administrators tell NBC Montana they had a small handful of students go home with symptoms this morning, too.

There are no classes Monday due to teacher training, so administrators hope the day off will allow students to make a full recovery.

Ravalli County health officials report the origin of the stomach virus is still unknown. Symptoms include nausea, vomiting and diarrhea.

The district dealt with a similar issue in March. Back then, the schools closed for two days to deal with the same strain of the stomach virus. During that outbreak as many as 100 students were sick.

Florence-Carlton staff member Linda Martin said her granddaughter went home with stomach virus symptoms Thursday. “My granddaughter’s mother got the stomach virus too and she wasn’t even at the school,” said Martin. “It seems like this virus spreads very quickly.”

Administrators say they're advising area physicians to be on the lookout for signs and symptoms, and they'll be monitoring the situation to see if it gets any worse.

If you think your child is sick you're urged to call your doctor or the Ravalli County Public Health Department.