Hay fever patients will suffer (even) more from their allergies from the Easter weekend, experts from Wageningen University, the Leiden University Medical Center (LUMC), the Elkerliek Hospital and Weeronline report Thursday.
Due to the high temperatures of the last few days, trees have blossomed at an accelerated rate.
Now that colder weather is expected from Easter, flowering will last longer.
It is expected that the season of birch pollen, which is notorious for hay fever patients, will immediately turn into the grass pollen season.
Pollen meters at the LUMC and the Elkerliek Hospital have already collected significantly more pollen in the past week.
This is because the flowering of poplar, ash and willow has begun.
According to the experts, flowering takes place two weeks later than last year, because it has remained cold for a long time.
The peak of the birch bloom is between April 10 and 24.
The biggest nuisance will be over at the beginning of May, when the grass starts to bloom.
In February there was a hay fever peak because the alder was in bloom at the time.
Experts then pointed out that hay fever symptoms can be very similar to corona symptoms, but usually a hay fever patient does not have a fever or loss of smell.
Allergic patients who don't trust it should always get tested, the scientists say.
See also: Hay fever symptoms can be confused with corona symptoms