KUALA LUMPUR (REUTERS) - Malaysia's economy is expected to expand by 4.5 per cent this year, Prime Minister Mahathir Mohamad said on Monday (Feb 10), down from the government's initial estimate of 4.8 per cent.

Tun Dr Mahathir cited "challenging times" for the revision to the government's forecast, which was announced when the 2020 budget was tabled in November. He did not elaborate.

"With good fiscal discipline, our budget deficit will narrow to 3.2 per cent this year. We are committed to provide a stable business environment for investors. We will be business friendly," he said in a speech at a business conference.

Malaysia's finance ministry has floated a stimulus package to cushion the potential hit to the economy from the ongoing coronavirus outbreak, which has so far killed over 900 people and infected more than 40,000 worldwide.

Finance Minister Lim Guan Eng said on Friday (Feb 7) that his ministry is currently seeking feedback from other ministries and will present the stimulus plan to the Cabinet once completed.

"It (the virus outbreak) will definitely have an effect, but we need to look at it over the entire year," Mr Lim said.

Malaysia has so far confirmed 18 cases of coronavirus infections. The health ministry on Monday confirmed the latest case, a 31-year-old Malaysian male based in Macau, with a history of travelling to mainland China before returning to Malaysia on Feb 1.

The patient is currently being treated at the Sungai Buloh Hospital near Kuala Lumpur.