Mexican swine on their way to market in the spring of 2009, about 30 kms north of Mexico City.  Is this where the HINI flu started or can it be traced back to the 1918 pandemic?

Royalty-free stock photo ID: 29352058

Mexican swine on their way to market in the spring of 2009, about 30 kms north of Mexico City. Is this where the HINI flu started or can it be traced back to the 1918 pandemic?