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Median age of recorded cases across disease categories and data sources
| MCO | TDH | |
| Lyme disease | 41 | 39 |
| Rocky mountain spotted fever | 36 | 44 |
| Human monocytic ehrlichiosis | 36 | 57 |
| Tularemia | 47 | 29 |
| La Crosse viral encephalitis | 8 | 8 |
| West Nile virus | 61 | 62 |
MCO, managed care organization; TDH, Tennessee Department of Health.
