Feature Health & Medicine

2009 Science News of the Year: Body & Brain

By Science News

- More than 2 years ago

Numbers of passengers arriving from Mexico in March and April 2008 show which cities would have been most vulnerable to H1N1 transmission. Credit : The New England Journal of Medicine ©2009
Numbers of passengers arriving from Mexico in March and April 2008 show which cities would have been most vulnerable to H1N1 transmission. Credit : The New England Journal of Medicine ©2009

H1N1 strikes and spreads
Like the years 1957 and 1968, 2009 will be known as a pandemic flu year. The springtime eruption of a novel H1N1 swine flu strain in Mexico was followed by its rapid spread throughout the world (SN Online: 4/27/09).