An outbreak of the hospital superbug MRSA has been brought to an end by UK doctors cracking the bacterium's genetic code.
It led to them finding one member of staff at Rosie Hospital, in Cambridge, who may have unwittingly carried and spread the infection.
They say it is the first time rapid genetic testing has been used to track and then stop an outbreak.
One expert said this would soon become "standard practice" in hospitals.
Doctors were concerned after MRSA was detected in 12 babies during routing screening.
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