Brussels

Mugwort (Artemisia) is in bloom. Maximal pollen emission of this allergenic herbaceous plant takes place in the first two weeks of August. Mugwort pollen can cause allergenic reactions. On Thursday, the concentration reached 1 pollen grain/m³ air in Brussels.

Sorrels, docks, plantain and nettles are still emitting pollen in the air.

The air also contains high amounts of allergenic fungal spores (Cladosporium).

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Indiviual sensitivity may vary a lot. It is reported in literature that 3000 spores of Cladosporium per m³ are enough to induce allergy symptoms to sensitized persons.