| west nile virus in north-eastern italy, 2011: entomological and equine igm-based surveillance to detect active virus circulation. | since 2008, west nile virus (wnv) has expanded its range in several italian regions, and its yearly recurrence suggests the virus may have become endemic in some areas. in 2011, a new plan based also on the detection of igm antibodies was implemented in the north-eastern italian regions of veneto and friuli venezia giulia, aiming to early detect wnv infections in areas where the virus had already circulated during the previous summers, and in adjacent zones. from july to november 2011, 1880 sera ... | 2013 | 22971022 |