Mexico's state-owned oil company PEMEX appears to have not been affected by the swine flu, though oil prices have plunged.
"Pemex maintains production and distribution in the entire country," the company said in a statement. "Operations are normal at all its facilities: on its platforms, on-shore drilling, refineries and terminals and export facilities."
The company says it is in close contact with health authorities and has taken internal measure to reduce the threat of contagion.
Mexico's dramatic drop in oil production is a bigger problem for the country right now. Last week, Pemex said its first quarter output was 2.667 million barrels a day, down 7.8% from the same period in 2008. Cantarell, once it's largest field, produced 787,000 barrels a day down 34% from last year.
Mexico is the second largest oil supplier to the U.S. after Saudi Arabia. U.S crude oil imports from Mexico were down nearly 4% in the first two months of 2009, compared to the same period in 2008, according to the U.S. Energy Department. Total petroleum imports have fallen almost 6% in the same time frame.