Two cases of superbug MRSA were recorded at King George Hospital last year.
The infection, found at the hospital in Goodmayes, is resistant to most widely-used antibiotics and can spread through contact with infected people or contaminated objects.
MRSA often causes fever and boils, but if the bacteria break through the skin, they can lead to life-threatening infections, including blood poisoning.
Six cases were recorded at Queen’s Hospital between April and September last year, but there has been no sign of the infection at either hospital since September 26.
A report for primary care trust NHS North East London and the City said intravenous lines, or “drips” were identified as a “common theme” in cases.
A spokesman for Barking, Havering and Redbridge University Hospitals NHS Trust said: “We have been working hard to reinforce infection control messages across the organisation, and have introduced a new aseptic non-touch technique which has proved particularly successful.”
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