Monthly CDC report counts for Spotted fever rickettsiosis aggregated across all available years.
Cases peak in June — about 4,290 cases reported.
| Month | Cases |
|---|---|
| Jan | 323 |
| Feb | 377 |
| Mar | 667 |
| Apr | 1,493 |
| May | 3,100 |
| Jun | 4,290 |
| Jul | 3,815 |
| Aug | 2,884 |
| Sep | 2,028 |
| Oct | 1,128 |
| Nov | 541 |
| Dec | 353 |