Kenyan authorities are now stepping up efforts to prevent the spread of the deadly Ebola virus into East Africa, as the outbreak in West Africa continues to infect new victims and cause death.

Meantime, the World Health Organization says more specialists are needed in affected countries to help stop the virus.

Su Yi has more.

Reporter:

The Kenyan government is shoring up surveillance at major airports and along its border.

The move comes after the WHO classified Kenya as a "high-risk" country for the spread of the Ebola virus.

WHO officials say Kenya is vulnerable because it is a major transport hub.

So far no Ebola cases have been reported in Kenya. Authorities have screened over 10-thousand travelers from West African countries.

Kenya Airways has announced a review of its West Africa operations ahead of making a decision on Thursday whether to stop flights to the region.

In other developments, Africa's most populous country, Nigeria, has reported a third Ebola-related death.

Guinea-Bissau has decided to shut its border with Guinea.

Also, Botswana has issued travel restrictions for people from Ebola-hit countries.

The death toll of the outbreak has risen to 1,069.

At the same time, Chinese medical teams are continuing their work in West Africa.

Kong Qingyu is head of Chinese medical team to Guinea, where the current Ebola outbreak first began.

"The team will talk to local officials regarding what kind of aid they require. Meanwhile, the medical staff will also provide trainings to the Chinese embassy, Chinese companies and Chinese nationals on how tropical diseases such as Ebola are infected at the first place. They will also offer advices on the precautionary measures."

Bian Jianqiang, the Chinese ambassador to Guinea, says the Chinese community is taking the situation in stride.

"All Chinese companies operating in the country are running as normal. Chinese nationals remain in the country. The first Ebola case was confirmed in the country as early as March. The worst periods were April and May. And now the situation is not as serious as it used to be."

China has dispatched three medical teams to Guinea, Liberia and Sierra Leone to provide training to local medical staff in the control of Ebola.

A second batch of Chinese medical aid, worth some 30 million yuan, arrived in the three countries this week.

Gregory Hartl, spokesman for WHO, is asking for more international support.

"This outbreak is so big that without a lot more specialists - clinical specialists, infection-control specialists, public health detectives, epidemiologists who go out and trace cases, lab specialists, communications people who go into the communities and help people understand what Ebola is - without all these kinds of people, we will not stop this outbreak."

The WHO has declared the outbreak a global health emergency and approved the use of untested drugs on Ebola patients.

For CRI, I'm Su Yi.