A study found that 6% of the 1,674 pediatric ICU patients at the Johns Hopkins Children's Center in Baltimore, Md., between 2007 and 2008 carried methicillin-resistant Staphylococcus aureus even though they didn't show an active infection, which might have led to inadvertent infection of other patients. "Point-of-admission screening in combination with other preventive steps, like isolating the patient and using contact precaution, can help curb the spread of dangerous bacterial infections to other vulnerable patients," the lead investigator of the study said.

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