* WHO says test confirms two cases of Ebola in Liberia
* Deadliest outbreak of disease in the region, 70 killed.
* Senegal shuts border, suspends weekly markets over outbreak
By Alphonso Toweh
MONROVIA, March 30 (Reuters) - The World Health Organisation (WHO) said on Sunday that Liberia has confirmed two cases of the deadly Ebola virus that is suspected to have killed at least 70 people...