Cruise lines have second thoughts about continuing port calls in Mexico. Carnival, Royal Caribbean and Norwegian changing their itineraries this week to avoid swine flu outbreak.

An AirTran flight from Cancun to BWI was briefly delayed last night after a couple passengers reported feeling ill. But health officials said their illness was not respiratory related. Turns out they were just tipsy.

A reminder that the borders remain open and there are no restrictions on travel to Mexico. However, the CDC has warned Americans to avoid non-essential travel to the country. "Border controls do not work. Travel restrictions do not work," WHO spokesman Gregory Hartl told the Associated Press.

And even though some passengers are changing their plans, airlines continue to fly into and out of the affected areas. As of late Tuesday, only Cuba and Argentina had imposed an outright ban on flights to Mexico.