Abstract
Aspergillus niger was most often isolated from 3 various black lea species dust obtained from packer factory. 10 species of black tea packaged in Poland and 28 various species of black tea and one species of green tea packed abroad. Other fungi were seen lees frequently. It seems that A. niger spores alone or with tea dust may induce various respiratory disorders in tea packers. Serum antibodies to antigens of A. niger and tea extracts imply that both may be important etiological factors.