Travel advisories have been released indefinitely for people who had planned to go to Mexico. The United States is telling people that if they had plans to go to Mexico that they should change them until further notice. The threat is just too great for Americans to be traveling to the country at this point. Agents at the border are watching for signs of the flu. They have a quarantine area at the border, although so far no-one has been found to be suffering from the virus while crossing the border.