The Singaporean government has stepped up efforts to combat mosquitos after 41 cases of locally-transmitted Zika infections were confirmed, local media reported Monday.
The National Environment Agency said over the weekend it had destroyed 19 sites where mosquitos were breeding in the area where the Zika outbreak had taken place.
Local parliamentarian Tin Pei Ling had also begun to draw up a list of pregnant women in her constituency, so as to keep them "updated and assured," local newspaper The Straits Times reported.
Zika has been linked with severe birth defects in the children of pregnant women who become infected with the virus.
Singapore confirmed its first case of locally-transmitted Zika on Saturday.
The Ministry of Health said that many previous cases had gone undiagnosed because doctors did not think Zika was likely due to the patients' lack of a travel history.
After the first locally-transmitted case was confirmed, authorities went back to test previous patients with similar symptoms and discovered more cases of infection, the ministry said.
Derrick Heng, the Health Ministry's group director of public health, said that the earliest case had been dated back to July 31.
Of those infected, 34 have already fully recovered while the remaining seven are still in hospital.