Singapore has confirmed 15 more cases of locally - transmitted Zika virus infections , taking the total up to 20 . All of the cases are in or around the Aljunied area , southeast of the city - state , mostly from foreign workers from a nearby construction site owned by GuocoLand . Singapore reported its first Zika virus case in May this year in a man who had visited Brazil . All the cases were in or near the Aljunied area in the southeast of the city-state, and most were foreign workers from a nearby construction site owned by GuocoLand, where testing for the virus is now complete, the health ministry said in a statement. Sales of mosquito repellents are banned in Singapore due to the risk . Health experts have warned that the Zika virus is likely to be significantly under - reported across tropical Southeast Asia since local health authorities are failing to conduct adequate screening .
Singapore has confirmed 15 more cases of locally - transmitted Zika virus infections , taking the total up to 20 . All of the cases are in or around the Aljunied area , southeast of the city - state , mostly from foreign workers from a nearby construction site owned by GuocoLand . Singapore reported its first Zika virus case in May this year in a man who had visited Brazil . Sales of mosquito repellents are banned in Singapore due to the risk . Health experts have warned that the Zika virus is likely to be significantly under - reported across tropical Southeast Asia since local health authorities are failing to conduct adequate screening .