| yellow fever definition us history | 1.4 | 0.5 | 5538 | 34 | 74 |
| yellow fever definition us history quizlet | 0.71 | 0.1 | 4284 | 42 | 52 |
| why is yellow fever called yellow fever | 1.35 | 0.6 | 5895 | 39 | 8 |
| yellow fever in history | 1.87 | 0.1 | 538 | 23 | 77 |
| yellow fever history united states | 0.49 | 0.1 | 7767 | 34 | 31 |
| yellow fever is a viral disease history | 1.14 | 0.3 | 712 | 39 | 62 |
| definition of yellow fever | 1.38 | 0.6 | 2050 | 26 | 16 |
| yellow fever history in america | 0.09 | 0.1 | 8426 | 31 | 16 |
| how did yellow fever get its name | 0.84 | 0.6 | 3638 | 33 | 91 |
| origin of yellow fever | 1.81 | 0.6 | 1195 | 22 | 10 |
| why is it called yellow fever | 0.59 | 0.2 | 2657 | 29 | 44 |
| when did the yellow fever occur | 0.71 | 0.6 | 7000 | 31 | 41 |
