IAS® Allergies analyses the level of allergic diseases in France day-to-day. It is particularly suited to monitoring spatial-temporal changes in seasonal allergies. From cypress in February up to ragweed in August, changes in allergic diseases can be seen on D+1 throughout the year.

This IAS® supplements pollen monitoring by the National Aerobiologic Monitoring Network, which is a monitoring system for risk factors.
The model used for IAS® Allergies is based on monitoring a set of medicines indicated for the symptomatic treatment of allergies in France and uses analytical methods and visual representations developed by OpenHealth.

Information is available on maps showing yesterday's status and progression of seasonal allergies in France over the past 30 days.
On maps, the size of each geographical area is proportional to its number of inhabitants (Ile de France is therefore very big, isodemographic representation), the colour is darker when allergies are greater. An allergies index (in a box on the right of the map) of ‘100’ means there is no seasonal allergy (base level for allergies in France).

An Allergies index of ‘140’ means there are 40% more allergies than the base level.

RNSA Pollen watch map

 
RNSA Carte

OpenHealth.fr research partner
rnsa

Allergy risk*

: nil
: very low
: low
: medium
: high
: very high
: data not available

 

©RNSA 2016

*The forecast allergy risk is determined from the measured pollen quantities, the short term weather forecast, the phenological stage of the plants and the strength of the symptoms found by general practitioners in their pollen-allergic patients.

 

History

Explore the incidence history in a video
IAS maps® from 2015 to 2016
ias youtube allergies
 

Contact us

Catherine COMMAILLE-CHAPUS - Strategy Director

Catherine COMMAILLE-CHAPUS

Strategy Director

 

News - Comments

30/05/2017
After a minimum on 6 May, allergies are growing strongly and this corresponds to the pollinization of grass. The entire country is affected but the incidence is lower around the Mediterranean, where the season is ending, and in the north of France, where the graph progresses with a few days delay in the most affected regions.

09/05/2017
People with allergies have a respite on the whole national territory: the peak bound to pollens of trees is ended, and the following one, bound to grasses, has not begun yet.

26/04/2017
For the allergic there is in this post-election week, two France. For big southwest half, going of the Brittany point to the Alps, the intensity of the allergic syndromes is already very high and corresponds to the broadcasts of pollen measured by the RNSA. In the North of this line, the allergic will still have a few days of respite.

24/03/2017
As every year the allergic season has started on the Mediterranean. The start was fairly late with a turning point on February 12 in the former PACA region and 15 in Languedoc-Roussillon. It will be interesting to put this observation in relation to the meteorological conditions and the pollination of the cupressaceae (cypresses) at the beginning of the year.

Read more

04/11/2016
At the end of this summer period the pollen season is now over for those French people suffering from allergy and they will now be able to take advantage of a few months of respite.

11/04/2016
Second wave of hay fever this year
On 22nd February 2016, we recorded an initial wave of hay fever, linked to cypress trees. As with every Spring, it is now the turn of the birch and other tree pollens to spoil the spring weather for those who suffer: sneezing, itching, runny noses, coughs, etc. The most affected regions are Ile de France and eastern France. In Ile de France, the increase in incidences has been spectacular since 30th March. In Alsace, the incidences began on 4th April, a few days later. Meanwhile, the Mediterranean coast is enjoying a short respite before the next wave: the grass family.

03/03/2016
In the PACA region and what used to be the Languedoc-Roussillon region, the first wave of pollen allergy of the year, linked to cypress, seems to be abating. The peak occurred around the 22nd February. In more northerly regions, allergy sufferers are still taking advantage of the winter calm.

03/02/2016
The new pollen season begins

The Winter respite is over for those allergic to pollen, particularly for those in the south of France. The IAS allergy is actually starting to increase in PACA (Provence-Alpes-Côte d’Azur) regions and in the former Languedoc-Roussillon. The threshold of 124 was exceeded in the Aix-en-Provence region. According to the RNSA (National Aerobiological Monitoring Network), the pollen that exists this season is that of cupressus (Cypress family).

31/08/2015
Allergies to ragweed in the Valence region

The Rhône valley, level with Ardèche and Drôme, is once again affected by allergies to ragweed. The map shows the peculiarity of this situation: whereas the intensity of allergic reactions is at a minimum in all French regions (index < 110), it is at its maximum (index > 140) in an area centred around Valence. The episode started in mid-August and is expected to last up to the end of September. Ragweed, an invasive plant for which there are plans to combat it, has been located in other regions (Montluçon, Bourges, Angoulême…) but it does not seem to trigger allergic symptoms.

31/08/2015
Allergies to ragweed in the Valence region

The Rhône valley, level with Ardèche and Drôme, is once again affected by allergies to ragweed. The map shows the peculiarity of this situation: whereas the intensity of allergic reactions is at a minimum in all French regions (index < 110), it is at its maximum (index > 140) in an area centred around Valence. The episode started in mid-August and is expected to last up to the end of September. Ragweed, an invasive plant for which there are plans to combat it, has been located in other regions (Montluçon, Bourges, Angoulême…) but it does not seem to trigger allergic symptoms.

12/06/2015
A North-South gradientAllergies to ragweed in the Valence region

Allergic symptoms are at their highest level in France this week. This is a direct effect of the pollination of grasses observed by the RNSA. There are, however, significant regional variations with a steep north-south gradient.
The peak is over in the Mediterranean area; the basic winter levels have even been returned to on the Côte d'Azur.
On the other hand, in the northern part of France the IAS® is still increasing, corresponding to exposure to grass pollen. The people in these regions who suffer from allergy are unfortunately not out of it yet.


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