Experience in Asia suggests that public health and medical capacity are critical for an effective response to an emerging infectious disease. Political will and previous experience with disease outbreaks also play a role. Singapore ignored an important segment of its population and is now experiencing a huge spike in cases. China and Vietnam were able to enforce draconian measures, while in Japan and Hong Kong, civil society had a greater role in initiating effective controls. In several countries, local political outcomes have been affected by the perceived success or failure of leaders in controlling the crisis.