A woman walks past a notice to alert residents of the Zika virus on the the wall outside a lift lobby in Singapore's Aljunied Crescent area on Aug. 29, 2016. Singapore's Ministry of Health (MOH) is actively testing people who live in the areas with high likelihood of local transmissions of Zika virus, as the number of people in the city state infected by Zika virus has grown up to 41 by Sunday. (Xinhua/Then Chih Wey)