Nigeria, a coastal country in western Africa, was landlocked in the Sahara, among other errors. The department said it had been “hastily altered.”

© Picture Obtained By Reuters/UGC

Nigeria, a coastal country in western Africa, was landlocked in the Sahara, among other errors. The department said it had been “hastily altered.”

© Picture Obtained By Reuters/UGC

New research also shows that children and high-risk adult populations have been particularly affected.

© Joao Silva/The New York Times