Although the facts are hardly in yet, he cites a report from a firm called Veratect, which maps outbreaks for clients like WHO and the CDC. From the report:
"They believed that the farms, operated by Granjas Carroll, polluted the atmosphere and local water bodies, which in turn led to the disease outbreak. "
I have a hard time believing that some of the blame for this cannot be laid at the feet of factory farm, with their well-documented scarcity of hygenic oversight.
I look forward to see what this outbreak does to cleanliness on hog farms.