Table 1.

Bacterial (CFU/25 g) and viral (PFU/25 g) indicators in Mediterranean seawater, fish and shellfish samples. -; only one positive sample, no SD.

Microorganism		Mediterranean Seawater *	Fish
			Shellfish	Mediterranean	Atlantic	Farm	Frozen
n		20	10	10	10	10	10
Total aerobic bacteria AmpR	% positive samples	100	90	80	70	100	40
	Average	2.4 × 103	4.6 × 107	5.1 × 104	5.7 × 106	3.8 × 106	1.0 × 108
	SD	5.6 × 103	4.9 × 107	5.9 × 104	9.4 × 106	8.3 × 106	1.2 × 108
E. coli	% positive samples	85	0	10	10	0	0
	Average	6.9 × 102	0	3.7 × 101	7.5 × 101	0	0
	SD	2.1 × 103	0	−	−	0	0
E. coli AmpR	% positive samples	60	0	0	0	0	0
	Average	6.8 × 102	0	0	0	0	0
	SD	1.9 × 103	0	0	0	0	0
Enterococcus spp.	% positive samples	90	30	10	40	20	10
	Average	1.0 × 102	1.4 × 102	7.5 × 101	7.3 × 102	1.9 × 102	1.1 × 102
	SD	1.5 × 102	1.2 × 102	−	1.2 × 103	5.3 × 101	−
Somatic coliphages	% positive samples	40	70	0	30	10	20
	Average	1.0 × 103	1.1 × 103	0	9.2 × 101	7.5 × 101	6.6 × 102
	SD	1.3 × 103	9.9 × 102	0	5.2 × 101	-	8.2 × 102

* CFU or PFU/L.