Date: Wed 9 Oct 2019
Source: Dabanga [edited]
Arbaat in El Ganeb locality in Sudan's Red Sea state reported 10 new cases of suspected Rift Valley fever* on Monday and Tuesday [7 and 8 Oct 2019], bringing the total number of registered cases to 5, and 3 deaths. Doctor Ahmed Dereir told Radio Dabanga about the spread of the disease in 8 villages in the area of Arbaat, pointing out that the cases were transferred to Port Sudan for treatment. He explained that the governor formed an emergency room of 35 people representing various government agencies, medical committees, and members of the Forces for Freedom and Change.
Ali Bayrak, head of the Community Support Committee for the residents of Arbaat called on the government for the explicit announcement of the results of laboratory testing of samples. The state Ministry of Health committed to provide 2 doctors to the villages of the Arbaat Administrative Unit and training 10 medical staff, and 3 midwives, in addition to the distribution of water chlorination tablets and the provision of 3 spraying vehicles.
As reported by Radio Dabanga on Sunday [6 Oct 2019], one man and more than 20 head of cattle died in Arbaat on Thursday and Friday [3 and 4 Oct 2019], and that to date, so far, 3 people and 420 cows have died of the disease, now suspected to be Rift Valley fever, that hit the area of Arbaat, north of Port Sudan, over the past weeks, medical doctor Ahmed Dereir told Radio Dabanga.
According to the UN World Health Organisation (WHO) Rift Valley fever (RVF) is a viral zoonosis that primarily affects animals but also has the capacity to infect humans. Infection can cause severe disease in both animals and humans. The disease also results in significant economic losses due to death and abortion among RVF-infected livestock.
RVF virus was 1st identified in 1931 during an investigation into an epidemic among sheep on a farm in the Rift Valley of Kenya, and most cases occur in Sub-Saharan Africa.
- Rift Valley fever (RVF) is a viral zoonosis that primarily affects animals but can also infect humans.
- The majority of human infections result from contact with the blood or organs of infected animals.
- Human infections have also resulted from the bites of infected mosquitoes.
- To date, no human-to-human transmission of RVF virus has been documented.
- The incubation period (the interval from infection to onset of symptoms) for RVF varies from 2-6 days.
- Outbreaks of RVF in animals can be prevented by a sustained programme of animal vaccination.
[On Wed 9 Oct 2019, villages in the area of Arbaat in El Ganeb locality in Red Sea state reported 9 new cases suspected to be Rift Valley fever, bringing the total number of reported cases to 65 (<https://www.dabangasudan.org/en/all-news/article/nine-more-cases-of-rift-valley-fever-in-sudan-s-red-sea-state
>). In addition to the Red Sea state outbreak mentioned above, a separate report indicates that Rift Valley fever is occurring in Sudan's River Nile state (see Rift Valley fever - Sudan: (RS,NR) human, animal, alert, OIE Archive Number: http://promedmail.org/post/20191014.6726088)
. These 2 Sudan states mentioned above are adjoining, so it is not surprising that suspected or confirmed Rift Valley fever (RVF) outbreaks are occurring there simultaneously. The Ministry of Health is investigating the outbreaks in both states. Not only are these outbreaks a human health problem, they are clearly an animal health problem as well, with 420 cattle reported dying of the disease. A One Health response is urgently needed, with participation of physicians, veterinarians and entomologists. There was evidence of RVF virus in the neighbouring Central African Republic this year (2019). Last year (2018), human and animal cases occurred in neighboring South Sudan (see Valley fever - South Sudan (09): (EL) human, animal, WHO http://promedmail.org/post/20180410.5735975)
If focal geographic areas of transmission are identified in this Sudan situation, increased surveillance of people and livestock should be initiated and livestock vaccination considered. RVF-infected livestock can pose a significant risk to humans in contact with them, often livestock owners and veterinarians. Abortions in livestock with a loss in productivity present an economic problem for many ethnic groups that depend on them for livelihoods.
The above report mentions abortion storms in a River Nile state outbreak that could have had serious economic, social and public health consequences. It is likely that RVF virus will persist in this area in transovarially infected eggs of _Aedes_ mosquito vectors. These eggs can remain viable for long periods and hatch when flooded during future rain events, with subsequent emergence of infected females ready to transmit the virus. This risk provides justification for maintaining livestock of the area well vaccinated into the future. - ProMED Mod.TY]
[A media (radio) report on an event of human and animal disease, in Sudan's area of Arbaat, north of Port Sudan, Red Sea state, caused by an "unknown fever" killing 3 people and 420 cows, was posted by ProMED-mail on 6 Oct 2019 as "undiagnosed," RFI (http://promedmail.org/post/20191006.6712623
). The commentary suggested RVF as possible etiology, requesting further information. According to Sudan's official OIE report, dated 13 Oct 2019, an event of RVF has been diagnosed in "Arabaata dam area, Alghunub Wa Alolaib, Red Sea state" (http://promedmail.org/post/20191014.6726088
), the animals affected being goats, which are thus considered, in this event, the virus' primary victims and main source of human infection, directly or through vectors. The samples from the goats were found RVF-infected by ELISA. In difference with the earlier media (radio) report, the OIE report indicated that there are "no cattle and sheep in this area." A media report dated 12 Oct 2019 (<https://khartoumstar.com/en/2019/10/12/ministry-of-health-rift-valley-fever-in-northern-sudan/
>) reported RVF "emerging" in Sudan's River Nile state, naming the locations Berber, north of Bawqa, Ftouar, Joule and Sulaimaniya, and the Artoli region of the East Bank. The report cited Hatem Fadl, an official in the epidemiology and emergency department at the Federal Ministry of Health, saying that "4 cases of Rift Valley fever were diagnosed among 17 samples taken last week, [which] were sent to the Central Laboratory in Khartoum." Hatem pointed out that the Federal Minister of Health commissioned a team to investigate the injuries, [which] arrived in the villages of Artoli, Al-Bawqa, and Fatwwar [Fri 11 Oct 2019], before the disease was officially announced (12 Oct 2019). Additional data were included in the same media source on 13 Oct 2019 (<https://khartoumstar.com/en/2019/10/13/attempts-to-control-rift-valley-fever-in-the-nile-river-state/
>). No details on animal cases in River Nile state have become available, nor specific lab results of the human samples. Additional information from Sudan, and clarification on the discrepancies between the media reports as far as animal species are concerned, will be welcomed. - ProMED Mod.AS]
[A map showing the location of the 2 states mentioned above can be accessed at:
HealthMap/ProMED map available at: