Brazilian health authorities say an antibiotic-resistant bacteria has infected a hospital in the southeastern city of Guarulhos and has killed four people.

The city's health department says in a statement issued Tuesday that the hospital was infected by the cinetobacter baumannii bacteria "frequently found in hospitals and is resistant to several kinds of ."

It says four people died in May and Jun and those who may have been exposed to the bacteria have been isolated. The hospital is being disinfected.

U.S. National Library of Medicine says on its website that the bacteria is primarily associated with hospital-acquired infections.