Disease

Swine Flu Pandemic - Report

Swine flu infected at least 20% of all people worldwide, including half of schoolchildren, during the first year of the pandemic in 2009, according to data from 19 countries. It is thought the virus killed 200,000 people around the world.

Although large numbers of people were infected, not all would have developed full-blown flu. The H1N1 virus first appeared in Mexico in 2009 and rapidly spread around the world. Approximately 24% of people had been infected overall, but half of school-age children showed signs of infection. Fewer than two in every 10,000 people infected died during the pandemic.