Why in the News
According to WHO, in October 2026 the first recorded human disease case of Shamonda virus in France came to light. The patient was already seriously ill; the additional symptoms linked to the brain were considered related to this virus. For now there is only one human case - information is limited; no treatment or vaccine is available.
Identity of the Virus
- Classification: family Peribunyaviridae, genus Orthobunyavirus, Simbu serogroup; a close relative of Schmallenberg virus.
- Spread: mainly affects cattle, sheep, goats and horses; spreads by the bite of Culicoides midges (small fly-like insects); a pregnant animal can also infect the foetus.
- History: first identified in cattle in Nigeria in 1965; later in Africa and Japan. In Europe for the first time in June 2026 (southern Germany-Switzerland); then dairy animals and horses in Austria, Belgium and France.
- Economic side: risk to milk production, breeding and animal trade.
Read the detailed analysis: Shamonda virus - the full analysis.
To understand zoonotic spillover and the One Health concept through the Nipah case, read: Nipah in Kerala (June 2026): contact tracing and One Health lessons.
To see the analysis article (Mains) on the same event, read: Shamonda virus: the first recorded human infection in France.
Identity of the Virus
Shamonda virus (SHAV) belongs to the family Peribunyaviridae, the genus Orthobunyavirus and the Simbu serogroup. According to WHO, it is of the same species as Schmallenberg virus. It was first isolated from cattle in Nigeria in the 1960s. After that it was identified in animals in Africa, Japan and Europe. Until October 2026 it was considered mainly an animal virus.
The Case in France: WHO's Account (2 November 2026)
According to the WHO report, France notified WHO of this first laboratory-confirmed human infection on 20 October 2026. The patient was an older man from eastern France with a weakened immune system, who had not travelled in the past year. From 23 September 2026 he developed severe neurological symptoms, such as visual disturbance, confusion, loss of consciousness and seizures. He was diagnosed with severe encephalitis (inflammation of the brain). He died on 8 October 2026. Confirmation came from metagenomic sequencing and RT-PCR testing, and other causes of brain inflammation were not found on testing. No second human case has been found so far.
Update: The first version of the article did not mention the death, because it was based on the WHO Q&A of 22 October. The WHO report of 2 November has this information.
How Does It Spread?
- According to WHO, this virus is believed to spread through small biting insects (midges) called Culicoides. The main vector species are not yet known.
- It does not spread directly from animal to animal. During pregnancy, an infected female can pass the virus to the foetus.
- The route of infection in humans is still unknown. In this case, exposure to mosquitoes was reported, but according to WHO there is as yet no evidence that Shamonda spreads to humans through Culicoides. (This is known for a different virus, Oropouche.)
- Spread through blood transfusion and food (milk) is considered less likely, but investigation continues.
The Situation in Animals in Europe
According to WHO, in the summer of 2026, infection was confirmed or suspected for the first time in Europe in cattle, horses and alpacas: in Belgium, France, Germany, the Netherlands and Switzerland. By 21 October it had also been found in animals in Austria, Ireland, Portugal, Slovenia, Spain and some other territories. Animal cases were recorded in 54 departments of France. Two forms (SHAV-EU1 and SHAV-EU2) have been found in Europe. Fever, diarrhoea, loss of appetite and reduced milk production have been seen in animals.
WHO's Risk Assessment and Limits
WHO says that one case shows that infection of humans is possible, but with so little data the risk to the general public cannot be assessed. There is no specific treatment or vaccine. At present, Shamonda is not on the list of diseases that must be reported to the World Organisation for Animal Health (WOAH). WHO speaks of surveillance with a "One Health" approach, that is, looking at human, animal and environmental health together.
Cautions for the Exam
- The "first human case" is of France; the "first identification" is of cattle in Nigeria.
- Remember Culicoides as the vector, not mosquitoes or rats.
- Do not take one case as an epidemic; WHO calls the risk "uncertain".
Additional Sources
- WHO, Disease Outbreak News, 2 November 2026: Shamonda virus in human - France
- WHO, Questions and answers, 22 October 2026: Shamonda virus
Prelims Practice Questions
Question 1. In which country did the first recorded human disease case of Shamonda virus come to light?
(a) Nigeria
(b) Germany
(c) France
(d) Japan
View Answer and Explanation
Answer: (c) France. According to WHO, the first human case was recorded in France in October 2026; the 1965 identification in Nigeria was in animals, and animal cases had been found in Germany since June 2026.
Question 2. Shamonda virus spreads among animals mainly by the bite of which of the following?
(a) Mosquitoes
(b) Culicoides (midges)
(c) Rats
(d) Bats
View Answer and Explanation
Answer: (b) Culicoides (midges). This is a small fly-like insect species; an infected animal in pregnancy can also infect the foetus.
Question 3. When and where was Shamonda virus first identified?
(a) In 1965, in cattle in Nigeria
(b) In 2026, in humans in France
(c) In 2010, in Japan
(d) In 1985, in Germany
View Answer and Explanation
Answer: (a) In 1965, in cattle in Nigeria. Since then it has been reported in Africa and Japan; it was found in Europe for the first time in June 2026.
Sources and Limits
- WHO Q&A, 22 October 2026 (read): who.int/shamonda-virus
- Limits: Only one recorded case in humans; details of the patient's condition are limited to the WHO text. No treatment/vaccine is available (WHO).
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