Surfaces and Air Bacteriology of Selected Wards at a Referral Hospital, Northwest Ethiopia: A Cross-Sectional Study

Table 1

Mean bacterial counts from air sample at FHRH, 2017 [20, 26].

Site	Mean bacterial load Cfu/dm^2/hr	Standard (cfu/dm^2/hr)
		Optimal	Acceptable	Unacceptable
Surgical ward	721 cfu/dm^2	0–250	251–450	>450
OR (active)	294.4 cfu/dm^2	0–60	61–90	>90
Maternity	619.3 cfu/dm^2	NS	251–451	>451
NICU	292.8 cfu/dm^2	NS	51–90	>90
ICU	246.9 cfu/dm^2	0–250	251–450	>450
Orthopedics	580.2 cfu/dm^2	NS	NS	NS
Dialysis	135.8 cfu/dm^2	NS	NS	NS

Debatable whether the listed standards are commonly accepted; NS, no standard set.