AN investigation will be launched into the cause of every case of MRSA at the Royal Bolton Hospital, bosses have promised.

The number of superbug infections continues to rise.

Last year, there were 43 reported cases of MRSA - the highest number recorded.

The previous year there were just 33 cases.

Health chiefs say they are now examining every case of MRSA, to determine whether it was acquired in the hospital or in the community.

They will use the information to devise plans on how to reduce the risk of people becoming infected.

Graham Munslow, a public health specialist for Bolton Primary Care Trust, said: "This is about trying to identify which procedures put people at risk of contracting MRSA and what proportion of people contract it in the community or in hospital.

"If we can identify where the infection occurred we can do something about it."

If a patient tested for MRSA is found to be infected with the bug within 48 hours of being admitted to the Royal Bolton Hospital, it is investigated by health teams in the community, as it is most likely it was picked up there.

But if a patient tests positive for MR SA more than 48 hours after being admitted, it is investigated by hospital staff.

Staff then pass on their findings, so others can learn from any mistakes that have been made.

Mr Munslow said: "This is already bringing the issue of MRSA infection to the forefront of the clinical teams' attention and is helping them appreciate the consequence of their actions."