| delta covid | 1.93 | 0.5 | 3269 | 11 | 48 |
| delta covid policy | 0.82 | 0.1 | 2313 | 18 | 36 |
| delta covid travel | 1.64 | 0.9 | 875 | 18 | 76 |
| delta covid symptoms | 1.64 | 0.6 | 9561 | 20 | 13 |
| delta covid 19 | 0.61 | 0.3 | 3227 | 14 | 27 |
| delta covid variant | 0.37 | 0.4 | 678 | 19 | 35 |
| delta covid tickets | 1.82 | 0.5 | 934 | 19 | 75 |
| delta covid cases in usa | 1.64 | 0.6 | 3623 | 24 | 90 |
| delta covid wave | 0.45 | 0.7 | 127 | 16 | 73 |
| delta covid credit policy | 1.94 | 0.8 | 9484 | 25 | 5 |
| delta covid travel map | 0.6 | 0.3 | 6457 | 22 | 16 |
| delta covid policy domestic travel | 1.53 | 0.4 | 7477 | 34 | 72 |
| delta covid symptoms onset | 1.74 | 0.2 | 8606 | 26 | 1 |
| delta covid-19 policy | 0.01 | 0.1 | 6882 | 21 | 26 |
| how delta airlines handled covid | 1.55 | 0.6 | 2609 | 32 | 49 |
| delta variance covid cases in michigan | 0.88 | 1 | 2948 | 38 | 20 |
| delta variant covid 19 | 1.1 | 0.1 | 9154 | 22 | 89 |
| incubation period for covid delta | 1.43 | 0.9 | 5010 | 33 | 89 |
| delta airlines covid policy | 1.69 | 0.7 | 533 | 27 | 8 |
| covid map us delta | 1.81 | 0.1 | 5677 | 18 | 97 |
