Table 2.
Cumulative number of cases and approximate cumulative incidence of flea-borne typhus in the Southeastern states and CA, 1922–1939 a,b.
| Rank d | State | Cumulative Number of Cases, 1922–1939 |
Avg Annual Cases | Avg Pop c 1920, 1930, 1940 |
Approx Cumulative Incidence; Cases/ 100,000 Avg Pop |
Avg Annual Incidence/ 100,000 Avg Pop |
|---|---|---|---|---|---|---|
| 1 | GA | 6225 | 345.8 | 2,976,020 | 209 | 11.6 |
| 2 | AL | 3751 | 208.4 | 2,609,128 | 144 | 8.0 |
| 3 | TX | 3277 | 182.1 | 5,634,256 | 58.1 | 3.2 |
| 4 | FL | 806 | 44.8 | 1,444,698 | 55.8 | 3.1 |
| 5 | SC | 707 | 39.3 | 1,774,098 | 39.9 | 2.2 |
| 6 | NC | 481 | 26.7 | 3,100,341 | 15.5 | 0.86 |
| 7 | LA | 244 | 13.6 | 2,087,994 | 11.7 | 0.65 |
| 8 | MD | 195 | 10.3 | 1,634,144 | 11.9 | 0.63 |
| 9 | VA | 181 | 10.1 | 2,531,172 | 7.51 | 0.42 |
| 10 | TN | 168 | 9.3 | 2,623,427 | 6.4 | 0.35 |
| 11 | MS | 158 | 8.8 | 1,994,745 | 7.9 | 0.44 |
| 12 | CA | 139 | 7.7 | 5,337,166 | 2.6 | 0.14 |
| Total | 16,332 |
a [128]. b Some reported cases from rural TN, NC, MD, and VA may have been Rocky Mountain spotted fever. c Average population calculated from average population of 1920, 1930, and 1940, from US Census Bureau Data. d Rank by cumulative number of cases.