Seasonal hay fever and pollen counts increase in Zurich
Zurich, Switzerland. 15th March 2013 -- Twig and florescence of a hazel tree with pollen. Hazel pollen freqently trigger hay fever and asthma during springtime and make allergic people suffer. -- Although the snow hasn't completely gone yet in Zurich, raising temperatures are triggering the hazel tree blossom on 15 March 2013 and pollen count increases massively. This makes many allergic people suffer from seasonal hay fever and asthma.
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