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IAS(r) Allergy
IAS(r) Allergy
Sébastien GUICHARD avatar
Written by Sébastien GUICHARD
Updated over a week ago

IAS(r) available on the website


IAS® Allergies can be used to analyse the level of allergic diseases in France on a daily basis. It is particularly well suited to monitoring the spatial and temporal evolution of seasonal allergies. From cypress in February to ragweed in August, it allows you to see how allergic diseases develop on D+1 and throughout the year. The model used by IAS® Allergies is based on the monitoring of a set of drugs indicated in the symptomatic treatment of allergies in France, and uses the analysis and representation methods developed by OpenHealth.The information is available in the form of maps showing yesterday's situation and the progression of seasonal allergies in France over the last 30 days. The size of each geographical area is proportional to its number of inhabitants (Ile-de-France is therefore very large, representation 7). The colour becomes darker as the allergy increases. An Allergies index (box on the right of the map) of 100 means that there are no seasonal allergies (the basic level of allergies in France); an Allergies index of 140 means that there are 40% more allergies than the basic level.


For each of the IAS®, these are weighted baskets of medicines and healthcare products dispensed over the counter in pharmacies and pathology markers.

These market definitions have been the subject of research and are regularly reviewed to take account of changes in product scope and practices.

As this is our intellectual property, we cannot provide access to these details.

OpenHealth The HUB - PHARMA: consumption data from pharmacies
Drug database source: SIPS THESORIMED
Source WHO ATC Classification: WHO ATC Version 2020

Metropolitan France - excluding Corsica
Geographical breakdown: French administrative regions as at 01/01/2016

From 01/07/2014 to date

Market definition
Type: Human medicine according to WHO ATC class code assignments - 2020 version - from the THESORIMED source.

Illustration at 04/01/2023:

Threshold :

Cases per 100,000 inhabitants per day.

National: 98.8

> 140Level 4 - epidemic phase

125 - 140Level 3 - pre (or post) epidemic phase

110 - 125Level 2 - non-alert phase

< 110Level 1 - reference

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