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Top 15 selected bigrams.
| Bigrams | Number of Appearances |
|---|---|
| side effects | 2738 |
| long term | 1281 |
| herd immunity | 917 |
| immune system | 856 |
| stop risk | 823 |
| risk proven | 823 |
| guinea pigs | 727 |
| new strain | 695 |
| big pharma | 666 |
| side effect | 526 |
| common cold | 499 |
| allergic reactions | 426 |
| experimental vaccine | 373 |
| guinea pig | 316 |
| rushed vaccine | 312 |
