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Low Airspora Counts

The unseasonally warm days, with cool, but not cold nights and little rain has given rise to low pollen and fungal spore levels during this late autumn period.

Fungal spore levels rise

The recent rains have provided the moisture necessary for the proliferation of fungal spores, after an unseasonally dry autumn. Ascospore levels rose sharply and significant levels were observed during the recent sampling week. Cladosporium levels also increased but did not breach the significant threshold of 3000 spores / cubic metre. Tree, grass and weed pollen levels were consistently low.

Pollen Sampling data: March

The next update will be delayed until April. Tree and grass pollen levels are likely to remain low, weed pollen levels will increase as autumn progresses and the fungal spore levels will increase in response to rain,

Alternaria levels persist at Table View

The significant levels for Alternaria continued during this sampling period, when counts exceeding 100 spores/cubic metre were observed. Grass, tree and weed levels were low.

Fungal spore are increasing as night temperatures are cooler. Following rain last week, the fungals spore levels increased and significant levels were seen for Alternaria, an allergenic fungal spore. All grass, tree and weed pollen levels at this site were consistently low.

Fungal spore levels increase following rain

The pollen and fungal spores were low in Table View during this mid summer period. However, the fungal spore levels may increase sharply in response to rain. Alternaria levels breached the significant threshold following rain during this sampling period. Epicoccum and Cladosporium levels increased but remained below the threshold.

Mid summer pollen counts

The grass count is now fluctuating from low to moderate as the grass pollen levels decline. Tree pollen levels are low, but weed pollen is increasing. Fungal spore levels are very low in response to high temperatures with no rainfall.

Happy New Year

Grass spike end November

Unseasonal summer rain in the Cape, followed by high temperatures produced an increase in grass pollen. Alternaria levels surged and moderate levels were observed for this allergenic fungal spore.

High Grass Levels

Grass pollen counts are now high at both sampling sites on sunny days. Alternaria levels are high in Table View. A strong risk for symptoms of allergy such as hay fever and ocular allergy (red, itchy eyes) would have been posed during this sampling period in Cape Town.