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Of relevance is the control of bacterial populations in health environments such as hospitals and other healthcare units to avoid the so-called nosocomial infections, mainly due to bacterial colonization on biomedical surfaces.

"They can infect any organism and commonly contaminate hospital environments. As a result they are a leading cause of nosocomial infections, in particular at the ICU."

I suspect the infection was transmitted by a staff member, much like other nosocomial infections.

The babies died recently at the Rabta hospital maternity ward in central Tunis, the country’s capital, after nosocomial, or hospital-acquired, infections led to deadly septic shocks, the health ministry said.

One study, for instance, found that about 95 percent of mobile phones carried by health care workers were contaminated with nosocomial bacteria.