| protect against measle | 0.52 |
| protect against mump | 0.51 |
| protect their children | 0.40 |
| protect against rubella | 0.37 |
| provide protection | 0.35 |
| never contained thimero… | 0.29 |
| cause inflammatory bowe… | 0.23 |
| cause associated disord… | 0.19 |
| cause brain injury | 0.16 |
| attenuated viruses | 0.16 |
| safe | 0.50 |
| more dangerous than mea… | 0.16 |
| ineffective | 0.16 |
| introduced | 0.42 |
| used in the uk | 0.42 |
| used in the usa | 0.36 |
| recommended | 0.33 |
| given in two doses | 0.32 |
| linked | 0.30 |
| withdrawn | 0.28 |
| separated by at least 2… | 0.25 |
| introduced in japan | 0.25 |
| contaminated with chick… | 0.16 |
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