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State Detection Table
| State/Province | County | Year Detected |
|---|---|---|
| Iowa | Cerro Gordo | 2020 |
| Iowa | Crawford | 2018 |
| Iowa | Decatur | 2017 |
| Iowa | Delaware | 2018 |
| Iowa | Des Moines | 2013 |
| Iowa | Grundy | 2018 |
| Iowa | Guthrie | 2020 |
| Iowa | Hamilton | 2018 |
| Iowa | Hardin | 2018 |
| Iowa | Henry | 2014 |