The World Health Organization (WHO) has classified Kenya as a “high-risk” country for the spread of the deadly Ebola virus.
Kenya was vulnerable because it was a major transport hub, with many flights from West Africa, a WHO official said.
This is the most serious warning to date by the WHO that Ebola could spread to East Africa.
Health experts are battling to contain the outbreak in West Africa, where it has killed more than 1,000 people.
Canada said it would donate up to 1,000 doses of an experimental Ebola vaccine to help fight the outbreak.
Airport health checks
In Sierra Leone, a doctor who treated patients infected with Ebola has died, reports the BBC’s Umaru Fofana from the capital, Freetown.
Dr Modupeh Cole is the second Sierra Leonean doctor to die of the disease.
In Nigeria, Africa’s most populous state, a third Ebola-related death was reported on Tuesday.