Beginning Thursday, travelers arriving from Ebola affected West African nations will be screened at O’Hare International Airport. Screenings are already underway at London’s Heathrow and New York’s JFK Airports. Customs and Border Protection agents will look for signs of illness and contact with people infected by the virus. Travelers will be expected to leave their contact information for possible follow-ups. WBEZ’s Shannon Heffernan reports from O’Hare.