I just came across this today.

The Mexican swine flu outbreak of 2009

In April 2009, nearly 1,000 cases of H1N1 swine flu were detected in Mexico
causing more than 60 deaths[15] <#120da048d1c130b5_cite_note-14>. On April
24, 2009, schools (from pre-school to university level) were shut down by
the government in Mexico City and neighbouring State of Mexico to prevent
the disease from spreading further. News sources report the spread as far
north as San Diego <http://wiki/San_Diego>[16]<#120da048d1c130b5_cite_note-15>
.

After spreading in Mexico it crossed the border to the U.S., causing 8 cases
in Texas and California. The patients have recovered.

 [edit <http://w/index.php?title=Swine_influenza&action=edit&section=7>
http://news.yahoo.com/s/ap/20090424/ap_on_he_me/med_swine_flu