Does anyone know if the spinach came from Mexico?
You can check the latest updates by the FDA at
www.fda.gov, including recommendations about what brands to specifically avoid. I'm sure that this information will change as the FDA gathers more data.
Somewhat ironically in light of your question, the FDA is saying that contaminated spinach may have been exported
to Mexico from the US, not the other way around. Plenty of food gets contaminated right here in the US, although most incidents don't result in highly publicized recalls like this one.