Efforts to contain an Ebola virus outbreak which has killed more than 200 people since August in the town of Beni in the Democratic Republic of Congo have been halted due to worsening rebel attacks. Health officials in the region had already stopped giving vaccinations and other outreach work two months ago after a rebel attack in which 18 people died. Now, a shell was fired at the house where 16 World health organization staff were living forced them to evacuate Beni for another city. It’s unknown who fired it as it occurred during fire exchange so could have come from the militia, UN…