Singapore authorities on Sunday confirmed 27 more cases of locally transmitted Zika virus infection, bringing the total to 242.
Twenty-five new cases were linked to the initial outbreak area, one was linked to a potential new cluster and the remaining new case had no known links to any existing cluster, the Ministry of Health and National Environment Agency said in a joint statement.
"There is a potential new cluster involving one previously reported case and a new case today...," the statement said.
Zika infections in pregnant women have been shown to cause microcephaly — a severe birth defect in which the head and brain are undersized — as well as other brain abnormalities.
The connection between Zika and microcephaly first came to light last fall in Brazil, which has since confirmed more than 1,800 cases of microcephaly.