http://www.ecdc.europa.eu/en/healthtopics/Documents/0905_Pandemic_Influenza_Pandemics_of_Influenza.pdf

It brings facts about influenza outbreaks. It has a timeline of different types influenza A outbreaks in human and in birds, brief information about pandemic influenza and graphics from 1918/1919, 1957/1958 and 1968/1969 pandemics influenza.