The aim of this study was to determine temporal and spatial variation of airborne concentrations of viable fungi in 2 single-family houses during the period of the year that such levels are mostly determined by indoor sources. One of the subject residences had moisture problems (the index residence), the other did not have any moisture problems (the reference residence). The concentrations of viable fungi in indoor air were determined a total of 6 times during the winter with 2 six-stage impactors (Andersen 10-800) in 2 rooms in both of the houses. The total concentrations of viable fungi and concentrations of Penicillium, Aspergillus, and Aspergillus versicolor were significantly higher in the index residence than in the reference residence. Statistically significant differences in the total concentrations were observed in the size ranges of 2.1-3.3 mum and 1.1-2.1 mum. In both residences, there was a statistically significant difference between the rooms in the total concentrations of viable fungi, although in the reference residence that was not of practical value because the levels were low. In concentrations of fungal genera, a significant difference, that was also of practical importance, was seen in the concentrations of Penicillium in the index residence. Both within-day and within-season differences of concentrations were observed in the residences: a trend of higher values in the morning and at the beginning of winter was noted. In order to characterize fungal concentrations of a residence with unknown indoor conditions, a sampling campaign of I I different days is needed. A strategy for responding to an alert or alarm situation is presented.

• fungi: assessment, sampling and analysis : field, over a year
• fungi: spore, aerosol : indoor concentration

1. An approach to management of critical indoor air problems in school buildings
2. Comparison of concentrations and size distributions of fungal spores in buildings with and without mould problems
3. Effect of building frame and moisture damage on microbiological indoor air quality in school buildings
4. Fungi and actinobacteria in moisture-damaged building materials - concentrations and diversity
5. Size distributions of airborne microbes in moisture-damaged and reference school buildings of two construction types  

1. Analysis of moisture findings in the interior spaces of Finnish housing stock
2. Characteristics of moisture damage in houses and their association with self-reported symptoms of the occupants
3. Comparison of two-level and three-level classifications of moisture-damaged dwellings in relation to health effects
4. Indoor air microbes and respiratory symptoms of children in moisture damaged and reference schools
5. Knowledge-based and statistically modeled relationships between residential moisture damage and occupant reported health symptoms
6. Moisture, mold and health in apartment homes  

1. An approach to management of critical indoor air problems in school buildings
2. Effect of building frame and moisture damage on microbiological indoor air quality in school buildings
3. Fungi and actinobacteria in moisture-damaged building materials - concentrations and diversity
4. Indoor air microbes and respiratory symptoms of children in moisture damaged and reference schools
5. Microbial exposure and health in schools - effects of moisture damage and renovation
6. Moisture damage in schools - symptoms and indoor air microbes
7. Moisture, mold and health in apartment homes
8. Rain penetration control - applying current knowledge (rpc-00)
9. Size distributions of airborne microbes in moisture-damaged and reference school buildings of two construction types
10. Skin-prick test findings in students from moisture- and mould-damaged schools: A 3-year follow-up study
11. The relationship between moisture or mould observations in houses and the state of health of their occupants  

1. Air pollution exposure in European cities: The "EXPOLIS" study
2. Fungal microcolonies on indoor surfaces an explanation for the base-level fungal spore counts in indoor air
3. Occurrence and moisture requirements of microbial growth in building materials
4. Significance of air humidity and air velocity for fungal spore release into the air  

1. An approach to management of critical indoor air problems in school buildings
2. Analysis of moisture findings in the interior spaces of Finnish housing stock
3. Comparison of concentrations and size distributions of fungal spores in buildings with and without mould problems
4. Comparison of two-level and three-level classifications of moisture-damaged dwellings in relation to health effects
5. Control of exposure to airborne viable microorganisms during remediation of moldy buildings; report of three case studies
6. Effect of building frame and moisture damage on microbiological indoor air quality in school buildings
7. Effect of growth medium on potential of Streptomyces anulatus spores to induce inflammatory responses and cytotoxicity in RAW264.7 macrophages
8. Effect of indoor sources on fungal spore concentrations and size distributions
9. Effect of liner and core materials of plasterboard on microbial growth, spore-induced inflammatory responses, and cytotoxicity in macrophages
10. Everyday activities and variation of fungal spore concentrations in indoor air
11. Fungal spores as such do not cause nasal inflammation in mold exposure
12. Fungi and actinobacteria in moisture-damaged building materials - concentrations and diversity
13. Indoor air microbes and respiratory symptoms of children in moisture damaged and reference schools
14. Induction of Cytotoxicity and Production of Inflammatory Mediators in RAW264.7 Macrophages by Spores Grown on Six Different Plasterboards
15. Inlet sampling efficiency of bioaerosol samplers
16. Knowledge-based and statistically modeled relationships between residential moisture damage and occupant reported health symptoms
17. Microbes and moisture content of materials from damaged building
18. Moisture, mold and health in apartment homes
19. Performance of bioaerosol samplers: collection characteristics and sampler design considerations
20. Personal exposures and microenvironmental concentrations of particles and bioaerosols
21. Size distributions of airborne microbes in moisture-damaged and reference school buildings of two construction types
22. Skin-prick test findings in students from moisture- and mould-damaged schools: A 3-year follow-up study
23. The relationship between moisture or mould observations in houses and the state of health of their occupants
24. Validity of detection of microbial growth in buildings by trained dogs  

1. Characteristics of moisture damage in houses and their association with self-reported symptoms of the occupants
2. Comparison of two-level and three-level classifications of moisture-damaged dwellings in relation to health effects
3. Indoor air microbes and respiratory symptoms of children in moisture damaged and reference schools
4. Knowledge-based and statistically modeled relationships between residential moisture damage and occupant reported health symptoms