UPMC Children's Hospital of Pittsburgh says a dozen people – including six babies – are treated for the antibiotic-resistant staph infection known as MRSA.
UPMC says the young patients are in the neonatal intensive care unit. Staff with potential symptoms came forward and six were confirmed to have the infection.
UPMC says all NICU patients have been tested and one patient may have symptoms of illness. Some test results are final and UPMC says it will provide updates as they are available.
The hospital says it has reported the Allegheny County and state health departments. The Centers for Disease Control and Prevention website says about 5 percent of patients in U.S. hospitals carry MRSA in their nose or on their skin.