Here are some decent links:
World Health Organization Influenza Outbreak in USA and Mexico http://www.who.int/csr/don/2009_04_24/en/index.html
CDC Travel health Precaution for Mexico http://wwwn.cdc.gov/travel/contentSwineFluMexico.aspx
There is no advice to postpone travel to Mexico and travelers should exercise “common sense” travel precautions such as frequent handwashing, avoidance of those with cough, sneeze or sniffles and low threshold for seeking medical care if fever and flu-like illness occurs. Swine Flu appears to be sensitive to anti-virals such as Oseltamivir (tamiflu) and Zanamivir (relenza). These medications are advised for treatment of swine-flu and should be started within the first day or two of symptoms.
Very interesting and scary stuff! More to come…