Why won't the fear of airborne Ebola go away?

Here is President Obama Thursday: “This is not an airborne disease. It is not easy to catch.”

And the day before: “It is not like the flu. It is not airborne.”

And today, a reporter asked the inevitable question about airborne Ebola when Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, held a press briefing about nurse Nina Pham’s transfer to the National Institute of Health.