Actually, it originated in South Texas. But was sent by a Texas A&M staffer to the national type culture lab in a re-used shipper which had the Dept of Ag animal diseases lab in Ames, IA as the return address.
Thus, did it gain its name. More accurately, it would be the Cotulla Strain...
This is extremely misleading.
The virulent Ames was modified to make it non-pathogenic.
It is this non-virulent Ames which has been distributed fairly widely.
The virulent Ames is known to exist in perhaps fewer than 6 labs.
Certainly not everywhere in the world.