Table 1.

Norovirus genogroup I (GI) and genogroup II (GII) concentrations and genotypes detected in outbreak samples

Outbreak	Type	Sampling point	Lab ID	Real-time RT-qPCR		Genotypes (number of clones)		Comment
				GI†	GII †	GI	GII
February 2010	Oyster	Restaurant A	REST79	<LOQ	2·35 × 103	n.t.	II.3 (5)	Oyster consumed at restaurant associated with gastroenteritis illness
	Oyster	Restaurant B	REST80	<LOD	2·04 × 103	I.4 (5)	II.3 (2), II.4 (1), II.13 (2)	Oyster consumed at restaurant associated with gastroenteritis illness
	Oyster	Harvest area 1, site 1	HAR69	1·95 × 102	2·89 × 103	I.4 (4)	II.3 (5), II.13 (2)	Oysters harvested after outbreak occurred
	Oyster	Harvest area 1, site 2	HAR70	<LOD	1·92 × 103	I.4 (4)	II.12 (3), II.13 (2)	Oysters harvested after outbreak occurred
	Stool*	Patient	STOOL	–*	–*	–*	II.13	Sequence data obtained by direct sequencing
January 2012	Oyster	Restaurant C	REST10	<LOD	2·38 × 103	I.1 (5), I.4 (14)	II.1 (5), II.3 (6), II.6 (2), II.4 (9)	Oyster consumed at restaurant associated with gastroenteritis illness
	Oyster	Harvest area 2	HAR13	1·79 × 103	4·00 × 103	I.NA (2), I.2 (3), I.11 (2)	II.1 (1), II.6 (2), II.7 (2)	Oysters harvested after outbreak occurred
	Stool	Patient	2937	3·46 × 105	4·85 × 108	I.4 (5)	II.1 (5)	Cloning of the nested RT-PCR products was performed prior to sequencing
	Stool	Patient	2915	<LOD	9·81 × 108	I.1 (4), I.6 (1)	II.1 (4)
	Stool	Patient	2906	1·32 × 108	2·21 × 108	I.4 (5)	II.1 (4), II.7 (1)
	Stool	Patient	2761	2·54 × 103	5·66 × 109	I.2 (1), I.4 (2), I.6 (2)	II.1 (5)

n.t., Not typed as nested RT-PCR amplification was unsuccessful.

^*Sample tested by National Virus Reference Laboratory in Dublin.

^†Real-time RT-qPCR results are expressed in genome copies/g faeces for stool samples and in genome copies/g digestive tissue for oyster samples.