The analysis of the time series highlights two phenomena. On the one hand a permanent increasing trend: it has tripled over the last 10 years! On the other hand, strong seasonality, with a peak every year in November and a low level at the end of June and the beginning of July. For professor Alain Dupuy, head of the dermatology service at Rennes university hospital, the increasing trend over the long term confirms what we have been observing in the field for the past few years. It is a continuing and regular trend that began before the halt in the availability of certain scabies treatments that we are currently experiencing. The other significant element, the post summer seasonality that had already been identified in France and in other countries, has been confirmed over the long term. Greater promiscuity linked to climate change, or changes in the life span of the sarcoptes depending on the climate are hypotheses that remain to be confirmed (Vincent Auvigne, 18/12/2014)

Scabies is a benign but very contagious disease and is very troublesome because of the intense itching that it causes. It can also result in social stigma. It is caused by a small acarid, an itch mite, with the female burrowing down into the epidermis to lay eggs. It has been progressing for several years in France and Europe yet very little epidemiological information is available. It is not a reportable disease and is not tracked by conventional epidemiology surveillance networks. The Scabies IAS® published by OpenHealth responded to this lack of information. It enables spatial-temporal progression to be tracked in France.