Isabelle, if you remember the Sars outbreak, doctors were all confined to ONE HOSPITAL to contain the spread of Sars.
Swine flu is worse than Sars. Although it have not reached SG, all govt bodies are preparing for the worst. So everyone is implimenting very strict control of movements not only of doctors but also of govt officials.
Thomson Medical Center though a bit more pricey than Mt A, it is actually a very nice environment. I delivered there and I would not hesitate to recommend my friends and colleagues back there. Even for #2, I'm intending to go back to Dr Woo and Thomson Medical Center