The title is a bit misleading. “One out of 15 airport contacts” made me think that 7% of everyone contact in the airport has Ebola. In the article it is clarified that it is one person.
I didn’t write the title...LOL...
But yes, to the western English it is odd sounding and is clarified later in the article that one person out of 15 that Sawyer contacted has turned up with Ebola.
There were 59 people aboard that airplane and an unknown number of ground personnel and others who might have had contact with this guy.
Do the math, and that breathless article yesterday about a possible 30,000 primary, secondary and tertiary contacts starts to look almost reasonable (and scary).