The group of former health and national security officials warned that Americans will be more vulnerable to infectious disease threats.

© Tony Quinn, via Associated Press

A vote to confirm Dr. Erica Schwartz, who has publicly supported childhood vaccines, will take place in the full Senate.

© Alex Kent/The New York Times

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

© Joao Silva/The New York Times

The aid workers were on the frontline in the fight against the outbreak in the Democratic Republic of Congo and have shown no symptoms, their employer said.

© Vantor, via Reuters