By Sandra Durieux
AMuch to the chagrin of its victims, birch pollen is a little ahead of its usual schedule. Expected at the beginning of April, this allergen, whose allergenic potential is classified among the strongest with grasses, began to exceed the critical threshold of one hundred grains per cubic meter on March 11, according to readings from AirAllergy.be, the Belgian aerobiological monitoring network. And the season is entering its peak. On March 25, the network recorded a concentration of more than 2,800 grains per cubic meter… An ordeal for allergy sufferers.
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