Don't look for leading Ebola researchers at the Sheraton New Orleans. Louisiana health officials told doctors and scientists who have been in West Africa not to come to a medical meeting in town. Prayitno/Flickr hide caption

itoggle caption Prayitno/Flickr

A woman on the L train in New York City last week covers her face, fearful because a doctor with Ebola rode the train days earlier. Epidemiologists say people on the subway were not at risk. Stephen Nessen /WNYC hide caption

itoggle caption Stephen Nessen /WNYC