Australia asked to explain Ebola visa ban

The World Health Organisation has asked Australia and Canada to justify their decisions to suspend migration from Ebola-hit west African countries.

"These are measures that go beyond the recommendations of the WHO's emergency committee," says Isabelle Nuttall, who heads WHO's alert and response department.

Australia on October 27 became the first Western nation to suspend migration from Ebola-hit west African nations, and Canada followed suit four days later.

The two countries said the moves were needed to ensure that the deadly virus, which has killed around 5000 people mainly in Guinea, Liberia and Sierra Leone does not surface within their borders.

But Nuttall pointed out that the UN's health agency had recommended only exit screening for people leaving the hardest-hit nations and did not think blocking entry to all