Experts say a delayed spring and higher pollen counts are making this allergy season more intense than usual for many Canadians. According to allergists, the combination of a late thaw and a rapid temperature rise has led to a concentrated release of tree and grass pollen, causing more severe symptoms.
Why symptoms are worse
Dr. Anne Ellis, an allergist at Queen's University, explained that the late spring meant trees and grasses released pollen over a shorter period, leading to higher concentrations in the air. “We’re seeing a more intense season because everything is blooming at once,” she said. Pollen counts in several Canadian cities have been reported as “high” to “very high” in recent weeks.
Impact on health
Allergy sufferers report increased sneezing, itchy eyes, and respiratory issues. The Asthma Society of Canada notes that higher pollen levels can trigger asthma attacks in susceptible individuals. Pharmacies have seen a surge in demand for antihistamines and nasal sprays.
Climate change link
Researchers attribute the trend to climate change, which is causing longer growing seasons and higher pollen production. A study by the University of Ottawa found that pollen seasons have lengthened by 20 days over the past three decades in Canada. “This is part of a broader pattern,” said Dr. Ellis. “We can expect more intense seasons in the future.”
