La peor epidemia en Estados Unidos se produjo en el estado de Nueva York en 1999, cuando murieron siete de las 62 personas infectadas. Con estas últimas ya son 22 las víctimas mortales en Estados Unidos de este virus, que es bastante común en Asia y África desde hace décadas pero que no había aparecido en el continente americano hasta el citado brote en Nueva York.
La mayoría de las personas que se infectan no sufren más que cefaleas y síntomas parecidos a los de la gripe, pero las personas ancianas, con enfermedades crónicas y aquellos con el sistema inmune debilitado pueden desarrollar una encefalitis mortal. Se estima que esto último ocurre en una de cada 200 personas infectadas.
En lo que va de año, al menos 31 estados norteamericanos han registrado casos del virus, pero la mayoría de ellos fueron animales, según los datos aportados por los Centers for Disease Control and Prevention.
Webs Relacionadas
CDC
http://www.cdc.gov/
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