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The problem of indoor air quality has in recent times attracted more concern than was the case several decades ago. Morey, (1999) presented some probable reasons why this is so. Construction materials have markedly changed from stones, wood and other ‘natural’ products to synthetic, pressed wood and amorphous cellulose products, some of which may be less resistant to microorganisms than the earlier ones. The indoor environment is invariably the closest to humans in terms of daily interaction, as a large proportion of man’s time is spent indoors, especially in the modern cities and urban societies. There are indications however, that in many parts of the world, our homes, schools and offices are heavily contaminated with airborne molds and other biological contaminants. Biological contaminants of the indoor air include fungi, bacteria, viruses, pollen etc.; and many species of fungi are able to grow wherever there is moisture and an organic substrate. Building materials such as ceiling tiles, wood, paint, carpet rugs, etc., present very good environment for growth of fungi (Robin et al, 2007; Morey, 1999; Heseltine and Rosen, 2009). Water accumulation and moist dirty surfaces also encourage growth of fungi within a building, and contribute to human health problems. Fungi are very successful organisms capable of survival in diverse environments. This is possible because of their physiological versatility and genetic plasticity. Their spores are produced in large quantities and easily spread over a wide area. These spores can remain dormant for a long period of time during unfavorable conditions. Fungal spores and products of their metabolism are able to trigger allergic reactions which include hyper-sensitivity pneumonitis, allergic rhinitis and some types of asthma. Infections such as influenza, respiratory fungal infections, mycotoxicoses, and eye irritation by fungal volatile substances, among others, are health risks and challenges to susceptible individuals. Children, the elderly and immuno-compromised persons are at greater risks (Simoni et al, 2003).

Relationship Between Fungal Contamination of Indoor Air and Health Problems of Some Residents in Jos