Three new probable cases of swine flu have popped up in Minnesota, but officials aren't closing down schools.

Two of the three probable cases announced Tuesday are connected to schools in Washington and Hennepin counties.

One case was at Oneka Elementary's pre-school program in Hugo, which led to the pre-school program to be canceled, but the elemetary school remains open.

One of the two Hennepin County cases involves Lake Harriet Community School in Minneapolis. That school will also remain open.

Minnesota health officials are still waiting for the CDC to confirm whether any of the state's nine probable cases are swine flu.

Health officials revised their guildlines to schools on Monday, saying the illness is now in the community and hasn't proven to be very severe.