Comment: Vaccinate for the next H2N2 pandemic now

Nature
Volume 471 Number 7337 pp135-260  10 March 2011
http://www.nature.com/nature/current_issue.html

Comment
Vaccinate for the next H2N2 pandemic now
An old influenza strain still circulating in birds and swine could easily jump back to humans now that immunity to it has dropped, warn Gary J. Nabel and his colleagues.