WNS area continues to expand in North America at record speed so far . Many sites are now known with WNS in Canada, and the U.S., the States of Tennessee and Missouri are now affected (cf . following map update 30/04/2010)!
WNS eneo inaendelea kupanua katika Amerika ya Kaskazini kwa mwendo wa kasi rekodi hadi sasa . Maeneo mengi ya sasa inajulikana kwa WNS nchini Canada, na Marekani, Nchi za Tennessee na Missouri sasa walioathirika (cf . kufuatia ramani update 30/04/2010)!