How the Ebola virus spreads How the Ebola virus spreads How the virus spreads How the virus spreads How the virus spreads CNN's Dr. Sanjay Gupta said. How the Ebola virus spreads How the Ebola virus spreads How the Ebola virus spreads How the virus spreads How the Ebola virus spreads How the Ebola virus spreads How the virus spreads CNN's Dr. Sanjay Gupta said.