Thibaudon M, Lachasse C, Finet F
RNSA, Chemin des Gardes, BP 8, 69610 Saint-Genis-l'Argentière.
Eur Ann Allergy Clin Immunol. 2003 Mar;35(3):87-91.
Ragweed in France is a rather recent pollen which causes strong allergies on the populations concerned. This pollen, mainly located in the area Rhone-Alpes, extend more and more on totality of France. Indeed, the pollinic data highlight the presence of ragweed on all the territory with very low, as for Brittany, to several hundreds grains in the area of Rhone-Alpes. So four towns of this area have followed closely the extend of this pollen during the year 2002 through five pollen-traps (2 for the town of Lyon). The trap of Lyon I (Gerland) made it possible to follow temporal the extend of ragweed from 1987 to 2002 and the increase of the number of grains as that of the number of days with a significant allergic risk. The study shows also the differences in quantity of pollens, the differences between the daily allergic risks of the five sites, as well as the differences, between the cities, of the number of days when the allergic risk is significant. It is necessary that pollen of ragweed can be followed closely because of its strong allergenic capacity, in the area of Rhone-Alpes, where the plant prevails mainly, but also on the totality of the own territory, this to supervise its evolution and the speed of proliferation of the plant.
法国的豚草是一种较新出现的花粉，会使相关人群产生强烈过敏反应。这种花粉主要分布在罗纳-阿尔卑斯地区，且在法国全境的分布范围越来越广。实际上，花粉数据显示，在整个法国领土上都有豚草存在，从布列塔尼地区的极低含量到罗纳-阿尔卑斯地区的数百粒不等。因此，该地区的四个城镇在2002年通过五个花粉捕捉器（里昂市有两个）密切跟踪了这种花粉的扩散情况。里昂一号捕捉器（格兰德）使得能够从1987年到2002年跟踪豚草的扩散时间以及花粉粒数量的增加情况，还有具有显著过敏风险的天数的增加情况。该研究还显示了花粉数量的差异、五个地点每日过敏风险的差异，以及不同城市之间过敏风险显著的天数的差异。由于豚草的致敏能力很强，有必要在豚草主要生长的罗纳-阿尔卑斯地区以及整个法国领土密切跟踪其花粉情况，以便监测该植物的演变及其扩散速度。
