Muổi nầy đả tới mỷ hồi 1999.
WNV has now spread globally, with the first case in the Western Hemisphere being identified in New York City in 1999;[4] over the next five years, the virus spread across the continental United States, north into Canada, and southward into the Caribbean islands and Latin America
https://en.wikipedia.org/wiki/West_Nile_fever