This brings the total number of people stricken to 12, according to a statement from the Ministry of Health (MOH) and National Environment Agency (NEA) on Friday.

The latest victim is a foreign national who lived at Norris Street - 200m away from the centre of the outbreak at Clive Street.

He had not travelled overseas recently and spent most of his time in the Little India neighbourhood, where all the other cases have occurred.

The news comes even after intensive search and destroy operations were conducted in the Clive Street area to remove mosquito breeding habitats.

To curb the outbreak, more than 4,400 inspections have been carried out by 20 NEA officers and 15 pest control operators - almost three times more than usual.

So far, a total of 73 breedings have been detected and destroyed.

The NEA is continuing its operations in areas beyond the Clive Street area, which are bound by Rochor Road, Race Course Road, Lavender Street and Jalan Besar.

Chikungunya fever is an acute viral disease, similar to dengue fever.

Like the dengue virus, it is spread by the Aedes mosquito and causes symptoms like fever, joint pains, chills and nausea which usually last three to 10 days.

All detected cases were assessed at the Communicable Disease Centre (CDC) at Tan Tock Seng Hospital and 10 people were admitted. All but the latest case have since been discharged.

A total of 2,268 people have already been screened by the MOH and NEA since the first case was detected on Jan 14.

Those who have been in the Little India area recently and have developed a fever are advised to consult their doctors.

Those infected by the virus should be isolated from further mosquito bites by staying indoors and sleeping under a mosquito net during the first few days of the illness.

This is to reduce the risk of further transmission of the virus.