Potential allergen from 0: none to 5: very strong

Between 10 and 40% of the world population would have an allergy to pollen, these microscopic grains transported by the wind. These diseases are seasonal so it is important to follow the timeline and pollen mapping.

Not all pollens have the same allergenicity. The typical symptom is the famous "hay fever" which poisons the life of a large part of the population. It is worrying that the number of victims has increased fourfold in the last 30 years!

The nature and quantity of pollen varies considerably depending on the region and the climatic condition. In the United States, the National Aeromedical Surveillance Network (NNSA) conducts regular measurements of pollen in the atmosphere. Knowledge of the nature and quantity of pollen allows doctors to have some help in diagnosis.

But the sick can also benefit from these measures that enable them to identify their enemies. All the pollens do not have the same allergenic power, this property depends on the presence of substances (proteins or glycoproteins) causing an adverse immunological reaction in the sensitive individual.

Discover through our summary table the dates of pollen occurrences and by clicking on those responsible for your allergies find out where the risk is greatest.

Mapping of the main pollens

* All this information comes from the National Aerial Surveillance Network (R.N.S.A.). The main purpose of this network is to study the air content of biological particles that may affect the allergic risk to the population.

Allergy treatments