UPDATE: Travel alerts have been issued by the State Department and the Centers for Disease Control and Prevention (CDC) requesting "nonessential travel to Mexico be avoided".
Meanwhile, the CDC is preparing yellow cards for travelers with details about the illness, which is apparently hard to distinguish from seasonal flu, at least at first.
For example, American Airlines is waiving its usual fee for changing bookings for anyone traveling to, from, or through Mexico through May 6 (if you bought your ticket before this past weekend).
Cruise lines have not reported any outbreaks. About one out of every four cruises stop at a Mexican port.
"Mexico's health minister said swine flu has killed up to 86 people and likely sickened up to 1,400 since April 13," reports the AP.
Some countries, such as India, and the European Union are discouraging non-essential travel to the U.S. and to our southern neighbor.
Mexico's official site: Mexico-update.com