There is still no diagnosis on what made Gov. Phil Bredesen ill, his wife, Andrea Conte, said Thursday afternoon.
She said the governor has undergone two days of tests at the Mayo Clinic in Minnesota, but what brought on high fever and a severe headache is still not known.
The First Lady said Gov. Bredesen is recovering.
She agreed to a conference call with reporters, but did not take questions.
The couple returned to Nashville on Thursday night.