Incidence of White Spot Syndrome Virus

Farmed frozen shrimp products	No. of samples	No. positive by non-nested PCR		No. positive by nested PCR IK1-IK2→IK3-IK4
Farmed frozen shrimp products	No. of samples	1s5 -1a16 IK1- IK2		No. positive by nested PCR IK1-IK2→IK3-IK4
Whole	75	6	3	57
Headless (HL)	15	6	-	9
Peeled and Undeveined (PUD)	9	3	-	6
Total	99	15	3	72

Table 2: Incidence of White Spot Syndrome Virus (WSSV) in farmed frozen shrimp products using single step and nested PCR.

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