"Let me reiterate corruption at all levels is a deep-rooted malaise and all sections of society are effected by it. We must, as a party, continue to lead a determined struggle to combat it effectively," Sonia Gandhi said at the party's 'Chintan Shivir' here.
She said corruption was the main concern of the nation when the party held its session in Burari in July 2011.
She said a five-point agenda to deal with corruption was given and the party has moved on with it.
The key among the steps taken was introducing Lokpal bill in parliament, introducing more transparency in allocation of natural resources and reviewing discretionary powers of ministers that could lead to misuse of public office, she said.
"We have introduced path-breaking legislation for redressing public grievances, protecting whistle-blowers and ensuring transparency in large government purchase and contracts," she said.
"We have launched the historic 'Apka paisa apke hath' (direct cash transfer) initiative," she said.