This has always been the case with CDC print materials. They always define “close contact” as “within a meter”.
Publicly, they say things a little differently.
http://www.cdc.gov/vhf/ebola/pdf/preventings-stigma-low-literacy.pdf
http://www.cdc.gov/vhf/ebola/pdf/when-someone-dies-in-the-home.pdf
I had a cold two weeks ago. A couple times when I sneezed and wasn't quick enough to cover my face (hands were carrying stuff), part of me landed on the wall across the room. More than two meters. To me, close contact would be two to three meters.