Results Of the patients, 88.86% showed positive results of inhaled allergens which were mainly pollen and ragweed;

结果吸入性过敏原阳性率为88.86%，其中以花粉、豚草为主要致病过敏原；

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Conclusion Significant difference exists between the extract of artemisia pollen and ragweed pollen, with the former being more complicated.

结论艾蒿花粉与豚草花粉提取液蛋白组分差异较大，前者更复杂；

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Tropical diseases such as malaria, dengue fever, and yellow fever are reaching temperate regions, and ragweed and poison ivy thrive in the hothouse world.

疟疾、登革热和黄热病等热带疾病正在侵袭温带地区，豚草和毒藤也在温室气候里茁壮成长。

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Trees start scattering their pollen in early spring, followed by grasses, and then ragweed kicks in during the summer and runs through fall.

CNN: Predicting allergy season eludes experts

Although the South suffers from weed and mold spore allergies in the fall, Gerald Kress, an executive with SDI Health, which operates Pollen.com, says the North and Northeast gets hit particularly hard by ragweed -- and 2009 is shaping up to be a banner year for ragweed pollen.

CNN: Southern deluge may help fall allergy sufferers

Moreover, we are told, global warming is expanding ragweed range and the range of other nuisance plants.

FORBES: Global Warmists Allergic To The Truth During Pollen Season