(CNN) -- One person has come to the United States and come down with Ebola here. Authorities want to keep it that way. To that end, the Centers for Disease Control and Prevention announced Wednesday beefed-up measures at five of America's biggest, busiest airports aimed at preventing the deadly virus' further spread. While talk about preventing Ebola's spread abounds everywhere from coffee shops to TV news, this intervention won't affect a lot of people. It applies only to about 150 people a day, by CDC Director Dr. Tom Frieden's estimate, arriving in the United States after having recently traveled from Ebolva-ravaged West African nations of Guinea, Liberia and Sierra Leone.
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New airport screening measures will affect travelers from Guinea, Liberia and Sierra Leone
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They'll take effect at New York's JFK airport, then in Atlanta, Chicago, Newark and Dulles
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Official: U.S. can track those traveling from West Africa via connecting flights
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CDC director: "We can't get the risk to zero here in the interconnected world"
If there are any red flags, the person will be evaluated by a @placeholder public health officer on site.