Rift valley fever: 2 new human cases and 2 herds this week


Update on outbreaks of human cases and animals on April 3, 2019

Animal diseases of viral origin, Rift Valley fever mainly affects domestic ruminants (cattle, sheep, goats), causing miscarriages and high mortality in young animals. It can be transmitted from sick animal to man.

During the past week, 2 new outbreaks of animals and 2 new human cases have been reported for a total of 86 outbreaks of animals and 116 human cases since the first cases occurred in late November 2018. In this epidemic context, the Mayotte prefecture , in collaboration with the ARS Indian Ocean and the Directorate of Food, Agriculture and Forestry of Mayotte (DAAF) recalls the importance of preventive measures to protect against the disease.

Epidemiological situation as of April 4, 2019
In total, since the beginning of the epidemic (end of November):
– Samples taken by veterinarians in sick animals or during abortions identified 86 outbreaks of diseased animals (including 71 cattle). The foci of the animals are located mainly in the center and northwest of the island, but some outbreaks of animals were found in the commune of Mamoudzou.
– 116 human cases of RVF were reported to the ARS OI (CVAGS) health monitoring and emergency platform of Mayotte by the CHM laboratory.

Since the beginning of the health alert, human cases have remained mainly in the center and northwest of the island. The trend observed for 3 weeks in decreasing the number of new contaminations is confirmed.


In ruminants, Rift Valley fever surveillance includes monitoring abortions. Accordingly, breeders are obliged to inform veterinarians immediately of any miscarriage or stillbirth that occurs in their diseased animals or animals in order to collect samples for the disease.
An order prohibiting the marketing of untreated milk has been in force since 27/02/2019.

A decree that prohibits the export of live animals, raw meat and milk produced by the country's ruminant farms has been in force since 03/20/2019.

In men, the disease usually manifests as a flu-like illness: high fever (39 °), muscle and / or joint pain, severe headache, fatigue. In the vast majority of cases, scarring occurs within a few days.

It is recommended to consult a doctor as soon as the signs appear so that the samples in search of the disease are made.

Recommendations to protect yourself from the disease:

>> For breeders and people in contact with animals:
o Wash hands with soap after contact with domestic ruminants (cattle, sheep, goats).
o Do not handle unprotected or sick animals or unprotected abortion products.
o Do not handle unprotected animal carcasses.
o Wear gloves, goggles and especially a mask for the slaughter of any animal. Infected animals may have no signs, although they may transmit the virus.

>> For food:
o Boil the milk
o Do not consume curd unless it has been boiled and curdled with dairy ferments.
o Wash your hands after cutting the meat.
Do not eat raw meat
o Do not consume the flesh of a sick animal.
>> To protect yourself from mosquito bites:
o Eliminate breeding sites, empty any containers that may contain water.
Use mosquito nets and repellents.
>> In case of symptoms:
o Consult your doctor immediately.


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