Presented results provided evidence that high concentration
of fungi in atmosphere can influence microbiological
indoor air contamination. Before the beginning of the
academic year so-called “outdoor moulds,” i.e. Cladosporium
spp., and Alternaria spp. dominated the indoor
air of investigated rooms and their concentration remains
stable. However, during the academic year a significant
variation of fungal genera in the air was observed and
concentrations of both Cladosporium spp. and Alternaria
spp as well as so-called “indoor moulds” genera like Aspergillus
spp., Penicillium spp. or Mucor spp. was growing
steadily during the daytime. Increasing concentration
of fungal spores during lectures in the course of the day,
especially those from the genera Cladosporium spp. and
Alternaria spp., can have a bad influence on health and
mood of students and teachers staying in these rooms