The US government Monday urged people considered 'high-risk' for Ebola to voluntarily stay at home for 21 days after returning from Ebola-stricken West African countries. Tom Frieden director of the US Centers for Disease Control and Prevention(CDC) said at a telebriefing that travellers from Liberia Sierra Leone and Guinea will now be placed into four risk categories based on their degree of exposure to the deadly virus Xinhua reported. (Read: Ebola virus is mutating rapidly say scientists) The high-risk category would involve those who for instance got a needle stick while caring for an Ebola patient or family members who
