More than 5,000 people have died from Ebola in the Democratic Republic of the Congo, government data show, making it the deadliest outbreak of the virus on record in the country.

The latest death toll was announced on Friday. More than 10,000 people have been infected since the outbreak was declared in May.

There are no approved treatments or vaccines to combat the Bundibugyo strain of the virus, a rare variant responsible for the current outbreak.

Delayed detection, ongoing conflict and strained health services have accelerated the spread of the virus beyond what was seen in previous outbreaks. The disease has now reached eight of the DRC's 26 provinces.

The outbreak has also crossed into neighbouring countries. Kenya and Uganda in East Africa have both reported cases. Last week, Nigeria became the fourth African country to confirm an Ebola case, extending the outbreak's geographic reach to West Africa.

This year's outbreak is the second-largest in recorded history, behind only the 2014-2016 epidemic that infected more than 28,600 people and killed more than 11,000 across Guinea, Liberia and Sierra Leone.

Several governments have responded by restricting travel to affected countries or imposing quarantine measures on travellers arriving from them.

On Friday, Saudi Arabia suspended travel to and entry from Kenya, according to the Saudi Press Agency. The measures include a ban on Saudi citizens travelling to Kenya and a halt on issuing all types of visas to travellers from the country.

The kingdom is also prohibiting entry to travellers arriving from Kenya, including those transiting through third countries who have stayed in Kenya or other Ebola-affected countries within the previous 21 days.

In June, Saudi Arabia had already suspended travel to and entry from the DRC, Uganda and South Sudan.