The rare species of Ebola currently spreading in the Democratic Republic of the Congo - known as Bundibugyo - kills 30 to 50 per cent of those infected but there is no proven jab.

Doctors battling the deadly Bundibugyo strain in DR Congo will likely have to wait months for a vaccine.

Rare Bundibugyo strain of infectious disease, detected in DR Congo and Uganda, has no approved vaccine or treatment

WHO raises risk of Ebola outbreak in Congo to 'very high' at national level