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The FDA has changed the full clinical hold placed on an Ebola drug to a partial hold. CNN's Sanjay Gupta reports.
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.
Dr. Sanjay Gupta says a hospital may have exposed 18 people to Creutzfeldt-Jakob disease through contaminated instruments.
Dr. Sanjay Gupta reacts to the Justice Department's announcement that it won't block laws that have legalized marijuana in states like Washington and Colorado.
Dr. Sanjay Gupta explains why mixing drugs can be fatal, and why it is so difficult to recover from heroin addiction.
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Dr. David King had finished running the Boston Marathon when the bombs went off, and he rushed to the hospital to help.