How another La Niña season will affect patients with hay fever

Professor Janet Davies

Australia has among the highest prevalence of asthma and hay fever globally. La Niña (and El Niño) will undoubtedly affect patients with allergies.

Sea-surface temperatures across the east-central equatorial Pacific cycle between episodes of La Niña (when the sea is cooler) and El Niño (when it is warmer). These complex weather patterns are likely to alter the amount of pollen in the air.