In
this work we complement those results by studying
the microbial charge of the indoor air in a university
institution of the same city. The building
of the Faculty of Biology of the University of
Murcia contains classrooms, departmental services,
research laboratories, cafeteria, library and
administration offices. The type of learning activities
carried out in this institution includes both
practical and theoretical lectures, so that students
and professors spend most of the working day inside
such building. The microbial density was analyzed
in several areas in the presence and absence
of users to assess for the contamination introduced
by the human activity and to determine
the microbiological status of this environment
which had not been studied previously.