SINGAPORE, Singapore (AFP)–Singapore may start turning back foreign visitors who do not have required vaccinations, authorities said, in a bid to protect the tightly-controlled country from infectious diseases. The country of 5.6 million people is a popular tourist destination, with 17.4 million visitors arriving in 2017. But its small size and openness have sometimes left it vulnerable, and it was hit hard by the Severe Acute Respiratory Syndrome (SARS) outbreak in 2003. Travelers are currently […]