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On Oct. 21, 2014, the World Health Organization (WHO) was notified by the National IHR Focal Point for France of four cases of chikungunya locally-acquired infection in Montpellier, France. The cases were confirmed by tests conducted by the French National Reference Laboratory for arboviruses on Oct. 20, 2014. This is the first time that locally-acquired transmission of chikungunya has been detected in France since 2010.
The four cases of chikungunya infection occurred within the same family, with symptoms onset between Sept. 20, 2014 and Oct. 12, 2014. The cases live in Montpellier in the vicinity of a chikungunya case imported from Cameroon. The cases have no history of travel out of their district of residence in the 15 days prior to the onset of symptoms.
French public health authorities have implemented the following public health measures:
- Vector control aimed at preventing local transmission.
- Provision of information about the awareness of the cluster, the signs and symptoms of the disease, when and where to seek care, and how to prevent infection.
- Advice to healthcare practitioners on clinical case management.
- Assessment of the risk of infection through blood and tissues donations.
Chikungunya is a viral disease that is rarely fatal and is transmitted to humans by infected mosquitoes. Symptoms of chikungunya include high fever and headache, with significant pains in the joints which can persist for several weeks. The symptoms appear between four and seven days after the patient has been bitten by an infected mosquito. The name, chikungunya derives from a word in Makonde language roughly meaning “that which bends up,” reflecting the physique of a person suffering from the disease.