Democratic Republic of Congo (DRC) declared their tenth outbreak of Ebola in 40 years on 1 August 2018. The outbreak is centred in the northeast of the country. With the number of cases passing 1,000, it is now by far the country's largest-ever Ebola outbreak. It is also the second-biggest Ebola epidemic ever recorded, behind the West Africa outbreak of 2014-2016.
Latest figures - information as of 29 May 2019; figures provided by DRC Ministry of Health.
Retrospective investigations point to a possible start of the outbreak back in May 2018 – around the same time as the Equateur outbreak earlier in the year. There is no connection or link between the two outbreaks.
The delay in the alert and subsequent response can be attributed to several factors, including a breakdown of the surveillance system due to the security context (there are limitations on movement, and access is difficult) and a strike by the health workers of the area which began in May, due to non-payment of salaries.
A person died at home after presenting symptoms of haemorrhagic fever. Family members of that person developed the same symptoms and also died. A joint Ministry of Health/World Health Organization (WHO) investigation on site found six more suspect cases, of which four tested positive. This result led to the declaration of the outbreak.
The national laboratory (INRB) confirmed on 7 August that the current outbreak is of the Zaire Ebola virus, the most deadly strain and the same one that affected West Africa during the 2014-2016 outbreak. Zaire Ebola was also the virus found in the outbreak in Equateur province, in western DRC earlier in 2018, although a different strain than is affecting the current outbreak.