WHO has confirmed 68 cases of Mexico virus worldwide . Texas has 40 ; California has 26 ; Arizona 18 ; South Carolina 15 ; Delaware 10 ; Massachusetts and New Jersey each have seven ; Colorado has four ; Florida , Illinois , Indiana , Ohio , Virginia , Wisconsin each have three ; Connecticut , Kansas and Michigan each have two ; Alabama , Iowa , Kentucky , Minnesota , Missouri , Nebraska , Nevada , New Hampshire , New Mexico , Rhode Island , Tennessee and Utah each have one . Mexico says illness declining there ; WHO warns it could return . U.S. has largest number of confirmed cases , followed by U.S. , the Centers for Disease Control and Prevention says . Mexican officials claim pigs at farm have been affected by virus .
WHO has confirmed 68 cases of Mexico virus worldwide . Mexico says illness declining there ; WHO warns it could return . U.S. has largest number of confirmed cases , followed by U.S. , the Centers for Disease Control and Prevention says . Mexican officials claim pigs at farm have been affected by virus .