1. Dawood FS, Jain S, Finelli L, Shaw MW, Lindstrom S, Garten RJ, et al: Emergence of a novel swine-origin influenza A (H1N1) virus in humans. N Engl J Med. 2009, 360 (25): 2605-15.
2. Human infection with new influenza A (H1N1) virus: clinical observations from Mexico and other affected countries, May 2009. Wkly Epidemiol Rec. 2009, 84 (21): 185-9.
3. Van Casteren V, Mertens K, Antoine J, Wanyama S, Thomas I, Bossuyt N: Clinical influenza surveillance of Influenza A(H1N1)2009 pandemic through the network of Sentinel General Practitioners. Arch Public Health. 2010, 68 (2): 62-67.
4. Decision No 2119/98/EC of the European Parliament and of the Council of 24 September 1998 setting up a network for the epidemiological surveillance and control of communicable diseases in the Community. OJ. 1998, L 268/1
5. Lernout T, Van Casteren V, Surveillance, a key strategy in the elimination of diseases: The case of polio and measles surveillance in Belgium. Arch Public Health. 2005, 63: 171-84.