Dans ce blog, nous parlerons de l'épidémie de chikungunya à La Réunion, de la gestion de cette crise, de l'utilisation des répulsifs et de la coopération médicale entre la France et les Comores

6.10.06

Peux t-on re-avoir le chikungunya?

Une majorité des réunionnais et nombre de médecins ont encore des doutes sur la possibilité d'attraper le chikungunya une deuxième fois.

Comme pour les autres arboviroses, les publications américaines et de l'OMS précisaient dés le début de l'épidémie que l'infection à virus chikungunya est une maladie immunisante. C'est à dire quels laissent plusieurs années, des anti-corps protecteurs qui neutraliseraient instantannement une nouvelle infection virale, comme pour la rougeole ou la varicelle.

C'est d'ailleurs pour cela que des études ont lieu sur le vaccin et que les autorités prédisaient un arrêt de l'épidémie quand 80% des réunionnais auraient été infectés.

Cependant officiellement , le caractère immunisant du chik n'a été mentionné dans les documents de la DRASS qu'en mai 2006 et dans le site chikungunya.net qu'en juillet 2006.

Par analogie, aux virus de la grippe aviaire également très médiatique et très "instable", mutant = qui change d'apparence extérieur régulièrement pour tromper les anti-corps présents ( cf les diffucultés rencontré dernièrement dans l'élaboration du dernier vaccin de la grippe), l'idée que le chik ait ou puisse muté de cette façon s'est ancré dans les esprits. Mais selon les virologiste le chik serait un virus très "stable" .

Il est vrai que la survenue de "rechute" parfois avec fièvre et quelque fois plus douloureuse que la maladie initiale, et pour l'instant inexpliquées, a de quoi entrenir le doute sur les "ré-infections".

De plus , de nombreux réunionnais qui assimilent le virus aux moustiques pensent que toute piqûre du zébré est infectante". Tout syndrome grippal ou douleur ostéo-articulaire étaient étiquetés "rechutes" ou ré-infection.

Une mutation récentes pourraient éventuellement expliqué que le moustique Aedes albopictou soit devenu un meilleur support de multiplication et dissémination du virus.

Ces hypothèses de mutation ont également fait croire à tord à l"opinion publique que le virus est devenu plus virulent et mortel . Cette thèse, non fondé, a encore été entendu du Dr Gaud comme relevé par Mausy dans le site chikungunya.net il y a 15 jours.

Aux risques de démobiliser contre la guerre aux moustiques, je croit que l'on doit maintenant dire et rassurer les réunionnais en leur disant:

Ou la déjà gagné à li , ou lé trankil. Mais fait gaffe à la dengue.......

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