Prevention against processionary caterpillars
By their particular structure, the hairs easily cling to the tissues (skin and mucous membrane) causing an urticarial reaction by releasing histamine (a substance also released in allergic reactions). These stinging properties persist even after the disappearance of the caterpillar (reactions to the skin, eyes, respiratory tract, digestive system) chenilles processionnaires 78.
The cocoons are located on pines or cedars, forming a silvery gray sleeve on twigs or pine needles .
With the current temperatures, warmer, in our department hatching is underway before this caterpillar transforms into a moth .
– do not approach these caterpillars or their cocoons and especially do not touch them. The hatching took place 5 to 6 weeks after laying (hatching during the summer between June and September depending on the climate),
– do not walk under a tree carrying a nest,
– wear protective clothing in the areas infested (sleeves and long pants),
– avoid rubbing your eyes in the event of exposure but also during and when returning from a walk,
– if in doubt, take a shower and change your clothes when you come home,
– after a first allergic reaction to caterpillar hairs, any further contact should be avoided because increasingly severe reactions are to be feared.
In the event of the appearance of severe symptoms, it is recommended to consult a doctor or an emergency department promptly.
Consult the following site of the Regional Health Agency: