Dear Kavita--Excellent blog that highlights the need to place attention to a critical but often forgotten and underfunded component of any modern health system: disease surveillance systems. These systems serve as the “intelligence centers” of the health sector that guide multisectoral responses by collecting, analyzing, and disseminating data and information for evidence-based decision-making, communicating, and educating the general population, and sharing evidence across countries. As you noted, in the new stage of globalization, no country or region can afford not to have such systems as vividly demonstrated by the SAR epidemic in the early 2000's that spread across countries without respecting national borders.
Perhpas the related blogs may also be of interest to your readers:
Crying wolf? Contagion is a real threat!: http://blogs.worldbank.org/health/crying-wolf-contagion-is-a-real-threat
Bird Flu and Public Health Systems: Lessons of History: http://blogs.worldbank.org/health/bird-flu-scare-and-the-importance-of-essential-public-health-functions