1. CDC (2011) Emerging infectious diseases. Available at:
http://www.cdc.gov/eid
2. ECDC (2011) Eurosurveillance. Available at:
http://www.eurosurveillance.org/
3. Fong A, Alibek K (2005) Bioterrorism and infectious agents: a new dilemma for the 21st century. Springer Science and Business Media Inc., New York
4. Giesecke J (2001) Modern infectious disease epidemiology, 2nd edn. Arnold, London
5. Heymann D (ed) (2008) Control of communicable diseases manual, 19th edn. American Public Health Association, Washington, DC