Table 2.

Descriptive values for Escherichia coli (E. coli), faecal coliforms and methicillin resistant Staphylococcus aureus (MRSA) enumerations (log colony forming units/sampling area) and detection after cleaning (CE units) and disinfection (control units) for each type of sampling location. Detection method was carried out after an overnight enrichment of samples

Location	Enterococcus spp.		E.coli			Faecal coliforms			MRSA
	CS (%)f	Enumerations	CS (%)	Enumerations	D (%)g	CS (%)	Enumerations	D (%)	CS (%)	Enumerations	D (%)
CE units
1a	100	5.0 ± 0.8	59	0.0–1.6–3.0	85	67	0.0–3.2–3.7	96	44	0.0–0.0–1.9	81
2b	100	4.8 ± 1.0	67	0.0–1.6–4.1	78	90	2.6–3.9–4.9	92	22	0.0–0.0–0.0	74
3c	100	4.4 ± 0.9	4	0.0–0.0–0.0	48	19	0.0–0.0–0.0	50	11	0.0–0.0–0.0	56
4d	100	4.9 ± 0.4	41	0.0–0.0–3.0	85	52	0.0–2.5–3.7	96	19	0.0–0.0–0.0	63
5e	96	4.4 ± 1.3	41	0.0–0.0–2.2	59	62	0.0–2.5–3.6	83	7	0.0–0.0–0.0	44
Control units
1	70	2.1 ± 1.6	11	0.0–0.0–0.0	26	33	0.0–0.0–2.5	58	0	0.0–0.0–0.0	26
2	48	0.0–0.0–3.0	0	0.0–0.0–0.0	4	10	0.0–0.0–0.0	46	0	0.0–0.0–0.0	19
3	33	0.0–0.0–1.7	0	0.0–0.0–0.0	7	5	0.0–0.0–0.0	17	4	0.0–0.0–0.0	19
4	89	3.3 ± 1.5	19	0.0–0.0–0.0	30	43	0.0–0.0–3.2	67	4	0.0–0.0–0.0	37
5	48	0.0–0.0–2.9	4	0.0–0.0–0.0	30	29	0.0–0.0–2.8	42	4	0.0–0.0–0.0	15

Mean and standard deviation are given for enumerations that are normally distributed. First quartile (Q1), median (Q2, bold characters) and third quartile (Q3) are given for enumerations that did not follow this distribution

^a1, floors

^b2, concrete walls

^c3, synthetic walls

^d4, drinking nipples

^e5, feeding trough

^fCS (%), proportion of countable samples given in percentage

^gD (%), proportion of positive samples after detection given in percentage