False-positive AI result in Trinidad and Tobago
Confirmatory testing in Trinidad and Tobago has shown
that a sample thought to be positive for bird flu was actually clear of the
Routine poultry screening in uncovered a sample that tested positive for bird
, but the latest tests show that the result was a false positive.
â€œSamples were subsequently forwarded for confirmatory testing at the
veterinary Laboratories Agency laboratory at Weybridge, England,â€ a release from
the Agriculture Ministry said.
The Ministry said false positive results were not unusual for screening
tests since they are very sensitive.
In the US, for example, there have been more than a dozen initial screening
tests that have shown potential H5N1 infection, but confirmatory tests have
shown these samples to be free from bird flu, or infected with a low-pathogenic
strain that is not harmful to humans.
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