Kenya has confirmed its first imported Ebola case, linked to an outbreak in the Democratic Republic of Congo. Here is what we know. The case involves the Bundibugyo virus, a strain of Ebola. The patient, a Kenyan who lived in the DRC for seven years, fell ill a month ago. He travelled by road to Uganda and flew to Nairobi on October 3. He died on October 5. Kenya is tracing 28 contacts plus 23 passengers and four crew from his flight. Is there an outbreak in Kenya? Officials say no. This is an imported case, not local spread. But the DRC outbreak is large. The WHO says it has caused 7,890 confirmed cases and 3,799 deaths since May, with a fatality rate near 48 percent. Kenya is the fourth country to report a case. Uganda ended its outbreak in August, and France reported a travel-linked case in June. The WHO advises against travel or trade restrictions. Kenya screened over 652,000 travellers since May. Health officials stress that Ebola spreads through body fluids, not through the air.