Table 1.

Percentages of pathogenic V. parahaemolyticus relative to total V. parahaemolyticus in water and oyster samples from Fox Island, Narragansett Bay, and two farms in the coastal ponds for 2009 and 2010 combined

Farma	% trh or tdh prevalence [avg ± SD (range)] in:
	Oysters		Water
	trh	tdh	trh	tdh
NB1	2.5 ± 5.0 (0–17.8)	0.2 ± 0.3 (0–0.8)	6.2 ± 11.8 (0–31.8)	0 (0)
NB2	7.2 ± 11.2 (0–39.8)	0.4 ± 0.8 (0–2.4)	10.5 ± 16.7 (0–45.8)	0 (0)
CP1	31.9 ± 39.2 (0–100)	0.4 ± 1.3 (0–4.6)	15.7 ± 29.0 (0–100)	0 (0)
CP2	6.3 ± 4.7 (0.1–24.8)	3.5 ± 7.6 (0–24.8)	2.4 ± 3.0 (0–4.6)	1 ± 1.5 (0–3.8)
Fox Island	NTb	NT	7 ± 14.4 (0–38.9)	2.7 ± 8.1 (0–24.3)
Total	12.1 ± 23.4 (0–100)	1.1 ± 3.9 (0–24.8)	8.2 ± 17.1 (0–100)	0.7 ± 3.4 (0–24.3)

^aNB1 and NB2 are farms in Narragansett Bay; CP1 and CP2 are farms in coastal ponds.

^bNT, not tested.