Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025
Chikungunya virus re-emerged on Réunion Island in August 2024, 18 years after a first major outbreak. Analysis of 173 genomes from the current epidemic reveals a monophyletic clade with mutations linked to adaptation to Aedes albopictus mosquitoes, including E1-A226V. Bayesian inference suggests onl...
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| Format: | Article |
| Language: | English |
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European Centre for Disease Prevention and Control
2025-06-01
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| Series: | Eurosurveillance |
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| Online Access: | https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.22.2500344 |
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| _version_ | 1850130011918434304 |
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| author | Marie-Christine Jaffar-Bandjee |
| author_facet | Marie-Christine Jaffar-Bandjee |
| author_sort | Marie-Christine Jaffar-Bandjee |
| collection | DOAJ |
| description | Chikungunya virus re-emerged on Réunion Island in August 2024, 18 years after a first major outbreak. Analysis of 173 genomes from the current epidemic reveals a monophyletic clade with mutations linked to adaptation to Aedes albopictus mosquitoes, including E1-A226V. Bayesian inference suggests only brief cryptic circulation before detection. The same lineage was also detected on Mayotte Island in March 2025. Continued spread and confirmed travel-related cases in mainland France and globally highlight the risk of wider regional and international dissemination. |
| format | Article |
| id | doaj-art-b871e2be36a841e2b48fd3159d0b353f |
| institution | OA Journals |
| issn | 1560-7917 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | European Centre for Disease Prevention and Control |
| record_format | Article |
| series | Eurosurveillance |
| spelling | doaj-art-b871e2be36a841e2b48fd3159d0b353f2025-08-20T02:32:48ZengEuropean Centre for Disease Prevention and ControlEurosurveillance1560-79172025-06-01302210.2807/1560-7917.ES.2025.30.22.2500344http://instance.metastore.ingenta.com/content/eurosurveillance/30/22Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025Marie-Christine Jaffar-Bandjee0Laboratoire de microbiologie, CHU de la Réunion-Site Nord, Saint-Denis, Réunion, FranceChikungunya virus re-emerged on Réunion Island in August 2024, 18 years after a first major outbreak. Analysis of 173 genomes from the current epidemic reveals a monophyletic clade with mutations linked to adaptation to Aedes albopictus mosquitoes, including E1-A226V. Bayesian inference suggests only brief cryptic circulation before detection. The same lineage was also detected on Mayotte Island in March 2025. Continued spread and confirmed travel-related cases in mainland France and globally highlight the risk of wider regional and international dissemination.https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.22.2500344Genomic analysismolecular epidemiologysurveillanceemergenceChikungunyaarbovirus |
| spellingShingle | Marie-Christine Jaffar-Bandjee Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 Eurosurveillance Genomic analysis molecular epidemiology surveillance emergence Chikungunya arbovirus |
| title | Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 |
| title_full | Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 |
| title_fullStr | Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 |
| title_full_unstemmed | Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 |
| title_short | Genomic insights into the re-emergence of chikungunya virus on Réunion Island, France, 2024 to 2025 |
| title_sort | genomic insights into the re emergence of chikungunya virus on reunion island france 2024 to 2025 |
| topic | Genomic analysis molecular epidemiology surveillance emergence Chikungunya arbovirus |
| url | https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.22.2500344 |
| work_keys_str_mv | AT mariechristinejaffarbandjee genomicinsightsintothereemergenceofchikungunyavirusonreunionislandfrance2024to2025 |