Gov. Bruce Rauner is staying at the Illinois Veterans Home in Quincy, where 13 people have died and dozens sickened from Legionnaires' disease.

Rauner spokeswoman Rachel Bold says the Republican arrived Wednesday night. She says he plans to stay several days with residents and staff to get a better understanding of "the clinical, water-treatment, and residential operations of the home."

Legionnaires' is a serious form of pneumonia caused by bacteria that can multiply in water systems. A 2015 outbreak killed 12 residents and another 53 residents and staff members were sickened. Another veteran died last fall.

The state spent $5 million upgrading the home's water system after the 2015 outbreak.