The coming winter vacation season is raising worries about the potential for Ebola cases in Caribbean and Central American countries, the top U.S. military commander in South America says, noting that smaller countries may be less equipped to deal with the problem.

Gen. John Kelly, head of U.S. Southern Command, told The Associated Press on Monday that leaders from the Caribbean and Central American countries are voicing concerns because many vacationers will be traveling to and from the islands, often without going through airport screenings the U.S. is putting in place. He said small nations such as Haiti would have a difficult time coping with an Ebola outbreak.