http://www.who.int/csr/resources/publications/surveillance/whocdscsr2002.pdf

It presents information on the current situation, action to contain outbreaks, gaps, constraints, and challenges in global alert and response, solutions, objectives of a global outbreak alert and response network, underlying principles, functions, structure and development of the network, funding, and activities leading to a functional network. Document in pdf format; Acrobat Reader required.