Abstract
The objective of this study is the characterization of mould inside and in the surface wall of a hospital. The present research was made on the wall of the Clinical Hospital of the Federal University of Parana, Brazil. For the methodology the samples were extracted from the surface, mortar and brick. The samples were spread on Petri plates containing Sabouraud dextrose agar and incubated at 25℃ for seven days. The results of the 90 samples collected showed growth of 39% of colonies with the following distribution of microorganisms: Aspergillus (present in 27% of samples), Cladosporium, Absidia, Rhizopus, Rhodotorula, Fusarium, Penicillium and Aspergillus flavus. Within the investigated substrate, three species of different fungi were identified: Aspergillus flavus, Aspergillus fumigatus and Aspergillus niger.
Highlights
The study of mold growth in the walls interior of masonry, fungi present in grout coatings, is necessary whereas in a wall demolition process, possible fungal spores, that may be latent inside, can contaminate the environment
The percentage of fungal growth on the 30 samples collected in laundry and placed in Petri dishes was 80%, which can be explained by the fact that the laundry room had a relative air humidity average of 60% and temperatures above 25 ̊C during the day. Such environmental conditions are favorable to the growth of microorganisms and justify the results found that 64% of the samples had fungi
Seven samples showed very similar results or above the minimum recommended by norms. These results demonstrate that the wall of the region E may be a coating mortar with consistency and resistance higher than the other regions studied
Summary
The study of mold growth in the walls interior of masonry, fungi present in grout coatings, is necessary whereas in a wall demolition process, possible fungal spores, that may be latent inside, can contaminate the environment. If the demolition is conducive to the contamination of air, these spores can be inhaled by immunocompromised patients who do not offer resistance to reproduction, which in turn provide favorable conditions of temperature, humidity and substrates for growth as analysis of Zanon and Alves [1]. The fungi of genre Aspergillus, cause of aspergillosis, have the rapid growth at temperature near 37 ̊C, which coincides with the range of variation of body temperature. The fungal spores can lodge, in some cases, in the brain region, or even in the lungs where they multiply cause infection that causes damage to the affected organ and en-. Matoski hances the appearance of other diseases such as tuberculosis and pneumonia, cited for [2] or the study of [3]
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