摘要
In March and early April 2009,a new swine-origin influenza A (H1N1) virus (S-OIV) emerged in Mexico and the United States. The virus spreads worldwide by human-to-human transmission.
基金
supported by the Intramural grant of the Chinese Academy of Sciences (CAS, Grant No KSCX2-YW-R-158)
the National Natural Science Foundation of China (NSFC, Grant No 30599434)
the Ministry of Science and Technology (MOST) 973 Proect (Grant No 2005CB523001)
GFG is a distinguished young investigator of the NSFC (Grant No 30525010)
