don Francisco
Contributor
Going outside of a terminal during a layover should be easy enough. You just have to put up with TSA screening again on re-entering.
..... but how do you figure destination is not important? Yes, I know this H1N1-2009 has established itself in other places, most certainly in Texas to some extent, but it's still most common in Mexico - so how it visiting Mexico as safe as others?
While you don't seem willing to accept the Mexican government's public announcements about where there are confirmed or uncomfirmed cases, you might do well by understanding Mexican travel patterns. Mexico is a large country and Mexicans don't have the level of intra-national travel that we see in the USA, so most of the travel to and from the hardest hit areas within Mexico is in fact to the good old USA.
The Yucatan Peninsula is a good 1,000+ miles from Mexico City and is an area with little intra-regional travel. Cozumel itself is an island off this fairly remote penninsula. So to say that visiting Cozumel is risky because of flu in Mexico City is like saying visiting Key West is risky because of flu in New York or Texas. If and when this flu does finally appear in Cozumel, or the elsewhere in the Yucatan, it's a safe bet that the route of transmission will be through the USA, with Houston Airport as the most likely crossover for transmission.
The fact is that Mexico is doing more than any other country to manage and contain this flu. Food workers in the USA do not routinely wear masks, Mexicans do. Moreover, Mexico has taken extremely difficult steps to reduce person to person transmission by severely constraining public gatherings, closing schools, and restricting travel.
It remains to be seen whether they're possibly over-reacting, but don't accuse the Mexican government of being asleep, or downplaying the problem.
Ultimately, it's up to each individual to assess any risks, but on careful examination one would have to conclude that travel from the USA to Cozumel is 100% as safe, (for the traveller) as travel to any other destination, and that a visitor from the USA is far more likely to bring this virus in than to take it out.