Lush grasslands, higher allergy risks – what hay fever sufferers can expect from another La Niña season

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

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.