France has detected 37 cases of chikungunya imported from Madagascar, indicating the transmission in that country

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Chikungunya, dengue fever, and Zika in mainland France. Enhanced surveillance bulletin of May 28, 2025.

Published on May 28, 2025
Updated on May 28, 2025

Key points

Indigenous cases

• No indigenous cases have been identified in mainland France.

Imported cases

Since May 1, the start of enhanced surveillance, until May 27, 2025, the following have been identified:

• 237 imported cases of dengue fever (n= 210 in departments colonized by Aedes albopictus ).
• 341 imported cases of chikungunya (n=321 in departments colonized by Aedes albopictus ). Note the identification of 6 imported cases from Madagascar, indicating the transmission of chikungunya in this country.
• 1 imported case of Zika (n=1 in departments colonized by Aedes albopictus ).

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https://www.santepubliquefrance.fr/maladies-et-traumatismes/maladies-a-transmission-vectorielle/chikungunya/documents/bulletin-national/chikungunya-dengue-et-zika-en-france-hexagonale.-bulletin-de-la-surveillance-renforcee-du-28-mai-2025

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CHIKUNGUNYA IN FRANCE - Cases imported from Madagascar

Miangaly Ralitera-Published on June 13, 2025

Surveillance of arboviruses is being stepped up in France. The bulletin published by Public Health France on June 11 indicates the presence of imported cases from Madagascar.

Visitors from Madagascar have been detected with chikungunya after returning to France.

Travelers returning from Madagascar have been identified as carriers of chikungunya in mainland France in recent weeks. Eleven of the 507 imported cases of chikungunya reported in France between May 1 and June 10 had traveled to Madagascar, according to the arbovirus surveillance bulletin for mainland France, published by Public Health France on June 11. A source at the French Embassy confirmed the authenticity of the website that shared this data.

Madagascar was cited in this bulletin as a country frequented by chikungunya carriers detected in France for the first time in week 22 of this year, towards the end of May, with five cases. In France, surveillance for dengue, chikungunya, and Zika is based on mandatory reporting. France has not recorded any indigenous cases, according to this bulletin.

In Madagascar, no cases have been officially confirmed. "To date, no laboratory, including the Pasteur Institute of Madagascar (IPM), has confirmed the presence of chikungunya in the country. Moreover, if this disease is present in Madagascar, the Ministry of Public Health must announce it. We cannot hide it," noted a source at the Ministry of Public Health yesterday. A scientist who has worked for a long time in the fight against arboviruses in Madagascar also casts doubt on the presence of chikungunya on the island. "It is not an isolated disease. If it were circulating in the country, several people would already be infected," he explains.

Same symptoms

However, several accounts from island residents suggest symptoms consistent with chikungunya. "At the beginning of May, I contracted an illness that confined me to bed for several days. I couldn't stand or sit. My knees and ankles hurt terribly. Added to this joint pain was conjunctivitis and a very itchy rash. I didn't go to a doctor; I just asked a pharmacy for advice," says Sayane, a resident of Nosy Be. She says her two children and several of her neighbors have exhibited the same symptoms.

Chikungunya, a mosquito-borne disease, is rarely fatal but can cause significant pain and prolonged disability, affecting the quality of life of those affected, according to information on chikungunya shared by the Institut Pasteur. Most patients who die from it also suffer from other illnesses, according to the same source. Remission of clinical symptoms is generally fairly rapid, with fever and skin manifestations disappearing within a few days. Existing treatments are symptomatic only.

Miangaly Ralitera

https://www.lexpress.mg/2025/06/chikungunya-en-france-des-cas-importes.html

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https://flutrackers.com/forum/forum/emerging-diseases-other-health-threats-alphabetical-a-thru-h/dengue/1013356-france-surveillance-of-dengue-chikungunya-and-zika-in-metropolitan-france-2025#post1014687

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Chikungunya, dengue fever, and Zika in mainland France. Enhanced surveillance bulletin of June 17, 2025.


Published on June 18, 2025
Updated on June 18, 2025

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/https://en.wikipedia.org/wiki/Nosy_Be
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INFECTIOUS DISEASE - Suspected cases of chikungunya analyzed

Miangaly Ralitera
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Published on June 27, 2025

Suspected cases of chikungunya are being analyzed in Nosy Be. Cases imported from Madagascar have already been reported in France since the end of May.

Raising awareness on the use of mosquito nets to prevent mosquito-borne diseases.

A possible outbreak of chikungunya is being investigated in Nosy Be. Samples have been sent to the laboratory for analysis.

"People, including foreigners staying on the island, complained of symptoms suggestive of this disease last week. Samples were taken to confirm whether it was chikungunya or another pathology. We are awaiting the results of these tests," said an official from this district in the Diana region yesterday.

Another source revealed that three cases of chikungunya are strongly suspected on the island and that a second test is underway to confirm the diagnosis. When asked about this, an official from the Ministry of Public Health indicated that he was unable to provide us with an answer.

The report on the enhanced surveillance of dengue, chikungunya and Zika in metropolitan France, published by Public Health France, reports imported cases of chikungunya from Madagascar since May 27.

Six cases were recorded between May 1 and 27, nine cases between May 1 and June 3, eleven cases between May 1 and June 10, and sixteen cases between May 1 and June 24.

In Nosy-Be, some officials remain skeptical about the actual presence of the virus on the perfume island.

"Our hypothesis is dengue fever, because in Nosy-Be, no cases of chikungunya have been officially reported yet. It's likely that these people passed through Réunion, where chikungunya is circulating widely, before arriving in Nosy-Be," explains our source.

Rarely fatal

Chikungunya is a rarely fatal disease, but it can cause severe pain and prolonged disability, according to experts. It primarily affects the joints of the wrists, fingers, ankles, feet, knees, and, more rarely, the hips or shoulders. The affected person may also experience headaches accompanied by fever, severe muscle pain, a rash on the trunk and limbs, conjunctivitis, or swollen cervical lymph nodes.

Health professionals from across the island recently benefited from a training session held at the Joseph Ravoahangy Andrianavalona University Hospital Center on June 23, where they were given skills training on how to distinguish dengue from chikungunya.

The goal is to improve patient care, speed up medical decisions and prevent possible complications.

Miangaly Ralitera

https://www.lexpress.mg/2025/06/maladie-infectieuse-des-cas-suspects-de.html

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