Australia, Taiwan, South Korea issue travel warnings for Singapore
* Pregnant women advised to avoid travel to Singapore
* Malaysia, Indonesia step up Singapore arrivals checks
* Singapore says "premature" to determine impact on tourism
* Most of Singapore's Zika cases among foreign workers
By Marius Zaharia
SINGAPORE, Aug 30 (Reuters) - Australia, Taiwan and South Korea advised pregnant women and those attempting to get pregnant to avoid travel to Singapore after an outbreak of the Zika virus infected more than 50 people in the city-state.
The outbreak and the warnings come as a potential blow to tourism in one of the world's busiest travel hubs, which is already struggling to recover from a slump amid tepid global growth.
Singapore reported its first case of locally-transmitted Zika at the weekend, and the number of reported infections of the mosquito-borne virus has since jumped to 56. At least three dozen of those have since made a full recovery.
The Zika virus was detected in Brazil last year and has since spread across the Americas. It poses a risk to pregnant women because it can cause severe birth defects. It has been linked in Brazil to more than 1,800 cases of microcephaly, a rare birth defect where babies are born with abnormally small heads and brains. Continuación...