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Why are crows, but not most other dead birds, tested for West Nile virus?

April 26, 2017Birds crows dead tested virus West Nile

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Why are crows, but not most other dead birds, tested for West Nile virus?

1 Answer

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Crows are very susceptible to the virus, which builds to very high concentrations in their blood. A die-off of crows is a strong indicator of local West Nile virus activity. Other kinds of birds may not be as susceptible and thus not as useful in detecting the presence of the virus.