Every tenth person in Central Europe is a pollinosis patient. The time
of ripening and release of pollen, as well as pollen flight, all depe
nd on the weather. Because each year is different from every other, me
an values from pollen calendars do not provide any practical help for
allergy-sufferers. For this reason, in many European countries, measur
ing networks have been established during the last 10 years as a basis
for forecasting the prevalence of airborne pollen for the following 2
-3 days, in connection with the weather forecast. Cooperation and comm
unication also exist on a European level, and a European Pollen Databa
se has been established.