在去年举行的欧洲呼吸病学会年会上 ,奥地利的研究人员宣读了他们对全国 2 2 83名 8～ 10岁儿童的调查结果 :生活在非乡村环境的儿童 ,对花粉产生过敏的机会 ,是生活在农场儿童的 3倍 ;前者比后者患哮喘的机会约大 4倍 ;用 7种易引起局部过敏的物质 ,对所有 2 2 83名儿童行“针 At the annual meeting of the European Respiratory Society last year, Austrian researchers read out their findings on 2,283 children aged 8 to 10 years in the country: children living in a non-rural environment had an allergy to pollen and were 3 times as many children living on farms; the former is about 4 times more likely to develop asthma than the latter; and 7 of 21 children prone to local allergies are given "needles