Could Smithfield Farms Mexican operation be "Hog Farm Zero" of the epidemic?

The outbreak of a new flu strain—a nasty mash-up of swine, avian, and human viruses—has infected 1000 people in Mexico and the U.S., killing 68. The World Health Organization warned Saturday that the outbreak could reach global pandemic levels.

Is Smithfield Foods, the world’s largest pork packer and hog producer, linked to the outbreak? Smithfield operates massive hog-raising operations Perote, Mexico, in the state of Vera Cruz, where the outbreak originated. The operations, grouped under a Smithfield subsidiary called Granjas Carrol, raise 950,000 hogs per year, according to the company Web site—a level nearly equal to Smithfield’s total U.S. hog production.

On Friday, the U.S. disease-tracking blog Biosurveillance published a timeline of the outbreak containing this nugget, dated April 6 (major tip of the hat to Paula Hay, who alerted me to the Smithfield link on the Comfood listserv and has written about it on her blog, Peak Oil Entrepreneur):

Residents [of Perote] believed the outbreak had been caused by contamination from pig breeding farms located in the area. They believed that the farms, operated by Granjas Carroll, polluted the atmosphere and local water bodies, which in turn led to the disease outbreak. According to residents, the company denied responsibility for the outbreak and attributed the cases to “flu.” However, a municipal health official stated that preliminary investigations indicated that the disease vector was a type of fly that reproduces in pig waste and that the outbreak was linked to the pig farms. It was unclear whether health officials had identified a suspected pathogen responsible for this outbreak.

From what I can tell, the possible link to Smithfield has not been reported in the U.S. press. Searches of Google News and the websites of the New York Times, Washington Post, and Wall Street Journal all came up empty. The link is being made in the Mexican media, however. “Granjas Carroll, causa de epidemia en La Gloria,” declared a headline in the Vera Cruz-based paper La Marcha. No need to translate that, except to point out that La Gloria is the village where the outbreak seems to have started. Judging from the article, Mexican authorities treat hog CAFOs with just as much if not more indulgence than their peers north of the border, to the detriment of surrounding communities and the general public health.

You want flies with that?