Ebola outbreak: how it spreads and prospects for a vaccine

The World Health Organization has declared a public health emergency of international concern over an outbreak of Ebola in the Democratic Republic of Congo and Uganda.How does the disease spread, how can it be treated and how concerned should we be?Further Information:Why is there no vaccine for this Ebola outbreak?Ebola vaccine could take nine months as death toll rises further, WHO warns.Ebola disease in DRC and Uganda.Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern.Absence of USAID likely slowed Ebola detection and response, former officials say