Dead Crow Densities and Human Cases of West Nile Virus, New York State, 2000
2001

West Nile Virus Surveillance in New York State

Sample size: 14 publication Evidence: moderate

Author Information

Author(s): Millicent Eidson, Jim Miller, Laura Kramer, Bryan Cherry, Yoichiro Hagiwara

Primary Institution: New York State Department of Health

Hypothesis

Is there a correlation between dead crow densities and human West Nile virus cases in New York State?

Conclusion

High densities of dead crows were associated with the number of human West Nile virus cases in Staten Island, while surrounding areas had lower densities and fewer cases.

Supporting Evidence

  • Staten Island had the highest number of human cases and dead crow densities.
  • Surrounding counties had moderate dead crow densities with fewer human cases.
  • Upstate counties reported low dead crow densities and no human cases.

Takeaway

The more dead crows you see, the more likely it is that people might get sick from West Nile virus.

Methodology

The study compared human West Nile virus cases with dead bird surveillance data across New York State counties.

Limitations

The study is limited to data from 2000 and may not apply to other years or regions.

Participant Demographics

Human cases were primarily from Staten Island, with additional cases from other NYC boroughs.

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