SINGAPORE, Dhu-AlQa'dah 24, 1437, Aug 27, 2016, SPA -- Singapore has confirmed its first case of a locally-transmitted Zika virus, which has been linked to microcephaly, a rare birth defect, in Brazil, the health ministry said, Reuters reported. A 47-year-old Malaysian woman working in the city-state was confirmed with the virus, but was "well and recovering." As she had not travelled to Zika-affected areas recently, she was likely to have been infected in Singapore, the ministry said in a statement. Three other cases have tested positive in preliminary tests on their urine samples and are due further checks. Zika was detected in Brazil last year and has since spread across the Americas. The virus poses a risk to pregnant women because it can cause severe birth defects. It has been linked to more than 1,600 cases of microcephaly in Brazil. Singapore, one of the world's largest financial centres and busiest travel hubs, said it expected more cases of the mosquito-borne virus which has wreaked havoc in Latin America, the Caribbean and beyond. "With the presence of Zika in our region and the volume of travel by Singaporeans as well as tourists, it is inevitable there will be imported cases of Zika into Singapore," the ministry said. "There is also risk of subsequent local transmission ... we expect there may be further cases, as most infected persons may display mild or no symptoms." The ministry said it was screening the patient's close contacts and carrying out tests on others living or working nearby. Clinics have been told to be on the lookout for more cases. -- SPA 21:35 LOCAL TIME 18:35 GMT www.spa.gov.sa/w