A CBS News medical correspondent and doctor says her "biggest concern for the World Cup is actually measles. It's not hantavirus, it is not Ebola."

A CBS News medical correspondent and doctor says her "biggest concern for the World Cup is actually measles. It's not hantavirus, it is not Ebola."

DHAKA, Bangladesh: A measles outbreak in Bangladesh has killed more than 500 children, government data showed Saturday (May 23), marking the country's deadliest surge in decades…