Tree pollen and nasal allergy. (XIII). Distribution of Japanese cedar pollen in Wakayama and southern Osaka in 1988.:-Distribution of Japanese Cedar Pollen in Wakayama and Southern Osaka in 1988-

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The increase of Japanese cedar pollinosis is becoming a social problem. The pathogenetic mechanism of this disease has been considered to be type I allergy, and therefore the amount of pollen in the air is closely related with the incidence of the disease.We have been measuring the amount of Japanese cedar pollen at various sites since 1985. Here we report the result of measurements in 1988 and discuss . forecasts of the amount of pollen in the air. We have put Duhrum type pollen-traps on the rooftops of several hospitals to measure the amount of pollen in the air.The results show that the pollen this year began to appear earlier and stayed later than in previous years. Accordingly we had more pollen this year than in an average year. The weather condisions which raise airborne pollen (in Wakayama City) appear to be an increase of the highest temperature of the day, an increase of maximum wind velocity, and a decrease of average humidity. We tried to forecast the amount of airborne pollen in Wakayama City but were unable to accumulate enough data. For forecasting the date of the first appearance of the pollen, the integrated figure of daily temperature since September 29 of the previous year (2026.75±47.67°C) seems to be most useful. It also seems that the weather condisions in the pollen generating period in addition to those in the pollen spreading period are important. Further accumulation of data is needed for precise forecasting.
耳鼻咽喉科臨床学会の論文

Tree pollen and nasal allergy. (XIII). Distribution of Japanese cedar pollen in Wakayama and southern Osaka in 1988.:-Distribution of Japanese Cedar Pollen in Wakayama and Southern Osaka in 1988-

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