摘要：Continuous sampling of airspora in Lake Manzala was carried out monthly over a period of 1 year at five sites with an automated air sampler on Czapek's yeast extract, DG-18 and potato dextrose agar media plates. A total of 71780 mould- and 560 yeast colony-forming units were recovered from 600 exposures and the isolated taxa were assigned to 28 genera and 43 species. A greater presence of fungal spores occurred in the summer. Aspergillus niger , Cladosporium cladosporioides , Epicoccum nigrum , Aureobasidium pullulans , Alternaria cheiranthi , Penicillium chrysogenum , Aspergillus fumigatus and Alternaria alternata were the predominant species. Many of the identified species have an aerodynamic diameter (dae) of 1.5-10 μm that can deeply penetrate into the lungs. Aspergillus , Cladosporium , Penicillium , and Alternaria that had the greatest frequencies in air of Lake Manzala are strongly associated with allergic respiratory disease, especially asthma, in Port Said and Ismailia governorates. A comprehensive model of factors that contribute to asthma in the region is needed and this can be a useful tool for planning efforts and disease prevention. The obtained results indicated that the fungi of air should be considered when the quality of Egyptian air is assessed
