a transitional model for the evaluation of west nile virus transmission in august 2008, after 10 years of apparent silence, west nile virus (wnv) infection re-emerged in northern italy, spreading through the territories of three regions. in the following years, new cases occurred in the same area and additional foci of infection were observed in central and southern italy, involving also sicily and sardinia islands. the italian ministry of health ordered to test by rt-pcr all blood and organ donors from 15th june to 15th november of each year in the infected areas. ...201625382294
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