Based on assessment of all available information and following several expert consultations, I have decided to raise the current level of influenza pandemic alert from phase 4 to phase 5. — Margaret Chan Copy Share Image
The influenza pandemic of 1918 may well be the greatest scourge ever to afflict humanity, exacting a death toll greater than all the wars of the 20th Century combined. The virus that wreaked this havoc apparently developed in birds, and… — David L. Katz Copy Share Image
