Sefton Central Labour MP Bill Esterson said he was pleased that Aintree University Hospital NHS Trust had acted promptly to improve its infection control after a report highlighted weaknesses.
Health services regulator for England, Monitor, conducted an investigation into the trust's failure to meet set targets, which included reducing the number of cases of the superbug C. Difficile.
Aintree University Hospital NHS Trust has agreed to take immediate action.
Bill Esterson said: "When failings like this are highlighted, then it is only right that action is taken immediately to put it right.
"I have received assurances from Aintree Hospital NHS Trust that they are taking immediate action, in particular in relation with the implementation of action plans to reduce the number of cases of C. Difficile and the regulator's concerns over governance at the Trust.
"Monitor have informed me that the Trust is meeting relevant targets in relation to MRSA infections and waiting times for patients who need routine operation and treatment in A&E.
"I have regular meetings with the Trust as Aintree University Hospital serves a large proportion of my constituents. I know the staff at the hospital are deeply committed to the NHS and work hard for their patients. But I do know that our hospitals are being adversely affected by this government's approach to the NHS, which has seen the number of nurses throughout the country slashed.
"The reality is that staff are doing all they can to address the problems in our NHS while the government is failing to give our NHS the support it needs. We have already seen a crisis at A&E but the Tories and Lib Dems have refused to take the action needed. Fortunately the hospitals and their staff are doing all they can in difficult circumstances despite the cuts made by this government.
"I will continue to work with the Trust, the staff and patients to ensure that we are getting a first class service from our NHS and I will continue to raise concerns about the Tory-Lib Dem Government NHS agenda."