Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-6:30pm ET on CNN.
The Centers for Disease Control has raised its Ebola response to the highest level out of a growing fear the deadly virus may reach the United States. CNN's Dr. Sanjay Gupta discusses why the number of cases continues to rise.
The World Health Organization says the concern about the deadly virus MERS has "significantly increased," with hundreds of people potentially exposed in the U.S. alone. Can officials detect the disease before it's too late and begins to spread to others? CNN's Brian Todd investigates.
CNN's Brian Todd reports on the spread of MERS in the United States.
As First Lady Michelle Obama celebrates four years of "Let's Move," CNN's Joe Johns looks at the initiative's growing impact, celebrity partners, and vocal critics.
New studies suggest that daily multivitamins are ineffective against dementia and heart disease. Elizabeth Cohen reports.
Gabriella Miller may have lost her cancer battle, but her fight for cancer research carries on. Dana Bash reports.
Tom Foreman speaks with three young Americans who want to sign up for Obamacare but can't because of website problems.
CNN's Elizabeth Cohen reports that Beau Biden entered the facility after a recent episode of weakness and disorientation.
The FDA is urging manufacturers to tighten security measures on pacemakers and other medical devices.