31. WHO 2003-9: "An influenza pandemic occurs when a new influenza virus appears against which the human population has no immunity, resulting in epidemics worldwide with enormous numbers of deaths and illness" WHO May 2009: "An influenza pandemic occurs when a new influenza virus appears against which the human population has no immunity"
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44. The explosion was most likely caused by the airburst of a large (around 20 m (66 ft) across) meteoroid or comet fragment at an altitude of 5 to 10 kilometers (3-6 mi) above the Earth's surface. The energy of the blast was estimated to be between 10 and 20 megatons of TNT, 1,000 times more powerful than the bomb dropped on Hiroshima
53. National Institute of Clinical Excellence Patienten Artsen, Industrie Deskundigen Klinische epidemiologie Gezondheidseconomie Medische ethiek Ambtenaren Responsible for reasonableness