Mold species diversity in selected churches of Ermita, Manila

Abstract

Molds are common components of indoor urban environments and exposure may result in the development of allergies, hypersensitivity reactions, and asthma. Mold species are opportunistic and can pose threats to exposed individuals. Hence, this study aims to assess the mold species diversity in the indoor air of four religious places in Ermita, Manila. The capture plate method with Sabouraud Dextrose Agar was used. Mold species captured were identified through their cultural and morphological characteristics. Slide culture preparations of the mold isolates were done. A total of 97 molds were isolated from the four religious venues. Church D had the highest Shannon Wiener Index (H’=2.02) while Church B had the highest Simpson’s Diversity Index (D=0.84), being the most diverse community. Churches A and D had the highest similarity in community composition (41.67%) while Churches C and B had the least (21.43%). No significant difference between the diversity and composition indices were observed. Species of Aspergillus sp., and Penicillium sp. were prevalent in all four churches. Continuous monitoring of public spaces is necessary as this helps in safeguarding the people from the threats brought by molds.