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Current Industry Sampling Programs
•
60 samples commingled, then tested
(typically by PCR)
Tests a e +/ not q antitati e
•
r
-,
u
v
•
Negative clears the field (really?)
•
Positive condemns the field
•
Cannot differentiate between gross field
contamination and “found the needle”
−
Because of “zero tolerance”, no
incentive to differentiate
Economic Impact of Sampling/Testing
Costs:
•
Sampling and sample handling supplies
•
Laboratory testing
−
testing costs multiplied by the
number of individual samples
•
Hold product (NA if still in field)
•
Consequence if result is “positive”
Benefits:
•
Reducing public health risk (quantifiable?)