The Ebola outbreak is getting worse. The death toll has now risen to more than 1,550 people.
The World Health Organization warned Thursday that more than 20,000 Ebola cases before the outbreak ends. In the meantime, the Food and Drug Administration has given researchers the greenlight to start testing a new Ebola vaccine in humans.
CNN's Chief Medical Correspondent Doctor Sanjay Gupta.
(CNN) - States that have legalized marijuana for managing chronic pain have significantly fewer deaths from prescription painkiller overdoses each year, according to a new study published Monday in JAMA Internal Medicine.
Researchers looked at medical marijuana laws and death certificate data in all 50 states between 1999 and 2010. During that time, just 13 states had medical marijuana laws in place.
"We found there was about a 25% lower rate of prescription painkiller overdose deaths on average after implementation of a medical marijuana law," lead study author Dr. Marcus Bachhuber said.
The two Americans infected with the deadly Ebola virus are now out of the hospital. Doctor Kent Brantly was released from Emory University hospital Thursday morning.
CNN learned Nancy Writebol was discharged Tuesday. Their doctor says they pose "no public health threat," though CNN's Chief Medical Correspondent, Dr. Sanjay Gupta reports a low risk remains that the two Americans could still infect others.
They've raised millions for charity, but the ever-so-popular ice bucket challenges don't always go off as planned. CNN's Jeanne Moos throws cold water on ice bucket challenges gone wrong.
The American doctor infected with Ebola speaks out.
In a statement, Doctor Kent Brantly said: "As my treatment continues in the isolation unit at Emory University Hospital, I am recovering in every way... There are still a few hurdles to clear before I can be discharged, but I hold on to the hope of a sweet reunion with my wife, children and family in the near future."
The deadly virus, though, is still spreading. The World Health Organization says there are now more than two thousand cases of Ebola in West Africa and more than 1,100 deaths.
They say these numbers "vastly underestimate" the magnitude of the outbreak, which they expect to go on for some time.
But help is on the way. One American doctor is risking her life, traveling to the center of the outbreak to help fight's the spread of this deadly disease.
CNN's Alina Machado reports.