A new pathogenic influenza virus, of which human-to-human transmission has been recorded, has recently emerged in North America, and has already spread to several Member States.
Viimasel ajal on Põhja-Ameerikas haigustekitajana esinenud uus patogeenne gripiviirus, mille puhul on teada inimeselt inimesele nakatumise juhud; kõnealune viirus on juba levinud mitmesse liikmesriiki.