[Lauren Daly]

Hi Ceejay

This is what national guidance recommends

https://www.hpsc.ie/a-z/respiratory/aspergillosis/guidance/Aspergillus%20Guidelines%202018.pdf page 33

No strict numerical guidelines are available for Aspergillus counts, which are appropriate for assessing
whether the contamination in a particular location is acceptable or not but the following threshold levels
have been recorded:
● Outdoor air (Note: seasonal variation recognised):
○ Aspergillus: 5-10 CFU/m3
● HEPA-filtered air (>99.95% efficiency and >10 ACH): <1 CFU/m3
● In ward area with no air filtration: <5.0 CFU/m3

[Lauren Daly]

Hi Ceejay,

This is what national guidance recommends:
No strict numerical guidelines are available for Aspergillus counts, which are appropriate for assessing
whether the contamination in a particular location is acceptable or not but the following threshold levels
have been recorded:
● Outdoor air (Note: seasonal variation recognised):
○ Aspergillus: 5-10 CFU/m3
● HEPA-filtered air (>99.95% efficiency and >10 ACH): <1 CFU/m3
● In ward area with no air filtration: <5.0 CFU/m3

https://www.hpsc.ie/a-z/respiratory/aspergillosis/guidance/Aspergillus%20Guidelines%202018.pdf page 33

[Author]

Posts