Table 1.
Cities included in the 1918–1919 influenza pandemic study, case-fatality rates and percentage of cases who developed pneumonia24
| City and state | No. of influenza cases | No. of pneumonia cases | Influenza case-fatality rate (deaths per 100 cases) | Pneumonia complications* (%) | July UVB dose (kJ/m2) | Latitude (° N) |
| New London, CT | 1466 | 136 | 3.14 | 9.3 | 4.7 | 40.6 |
| Charles County, MD | 6546 | – | 2.25 | – | 5.3 | 38.5 |
| San Francisco, CA | 4021 | 321 | 2.24 | 8.0 | 6.5 | 37.6 |
| Baltimore, MD | 8199 | 599 | 2.10 | 7.3 | 5.0 | 39.3 |
| Minor MD towns | 5060 | 322 | 1.66 | 6.4 | 5.1 | 39.2 |
| Des Moines, IA | 1353 | 138 | 1.63 | 10.2 | 4.8 | 41.6 |
| Macon, GA | 1681 | 103 | 1.49 | 6.1 | 7.5 | 32.8 |
| Louisville, KY | 1797 | 111 | 1.39 | 6.2 | 6.0 | 38.1 |
| Augusta, GA | 1405 | 63 | 1.28 | 4.5 | 7.3 | 33.5 |
| Little Rock, AR | 3565 | 159 | 1.09 | 4.5 | 7.1 | 34.8 |
| Spartanburg, SC | 1126 | 35 | 0.89 | 3.1 | 7.0 | 35.0 |
| San Antonio, TX | 6701 | 303 | 0.78 | 4.5 | 8.2 | 31.6 |
| Total | 42,920 | 2290 |
*Incidence of pneumonia in influenza cases.