Nigeria, Aug. 1 -- The Ebola outbreak caused by the Bundibugyo virus in the Democratic Republic of the Congo (DRC) has intensified, with 3,605 confirmed cases and 1,587 deaths recorded as of 30 July.

In a situation update released on Saturday, the World Health Organisation (WHO) warned that sustained transmission and the disease's expanding geographical spread continue to fuel what has become the country's largest Ebola outbreak on record.

The agency said the rapid rise in infections and deaths highlights the urgent need to scale up response efforts.

WHO said the outbreak was initially confined to the Mongbwalu Health Zone in Ituri Province but has expanded significantly over the past two months.

The virus has now spread across five p...