| nationwide surveillance of west nile virus targeting mosquitoes and dead birds from april 2004 through march 2007 in japan. | we conducted nationwide west nile virus (wnv) surveillance targeting mosquitoes and dead birds to reveal whether the virus and its potential vectors are present in japan. a total of 12 766 mosquitoes and 230 dead birds were collected in april 2004-march 2005 (the 2004-2005 period), 10 755 mosquitoes and 267 dead birds in april 2005-march 2006 (the 2005-2006 period), and 8624 mosquitoes and 245 dead birds in april 2006-march 2007 (the 2006-2007 period). the species of most of the mosquitoes colle ... | 2011 | 20163573 |