特異的IgE抗体陽性率よりみた徳島県南における花粉症

In the southern part of the Tokushima Prefecture, the positive rates of RAST for eight pollen antigens were measured in 309 patients with allergic rhinitis from January 1996 to March 1997. The positive rates of RAST for cedar pollens and cypress pollens were 72.2 and 59.2%, respectively. The positive rates of RAST for two other pollen, orchard-grass pollen and mugwort pollen, were less than 30%, and the rates of that for the remaining four pollens, short ragweed, oak, Japanese white birch and Japanese alder, were less than 20%. Therefore, most patients with pollinosis in this region were allergic to cedar and cypress pollen. The positive rates of RAST for dust mites was 43% in all subjects. The frequency distribution by ages in each antigen was analyzed, and showed that teenage groups were most frequent in all antigens. The RAST score of cedar pollen was the highest at 4, and the scores of all the other antigens were less than 2. Of 223 patients who were allergic to cypress pollens, 5 patients were only allergic to cypress pollens, the remaining 218 patients were also positive for cedar pollens.