| Chickenpox was significantly more severe in unvaccinated children than in vaccinated children. |
| Because of the herd immunity that exists because of mass vaccination, the unvaccinated are also protected. |
| By comparison, six out of seven unvaccinated animals had to be treated for virulent malaria. |
| Using a vaccine fully active in others, I vaccinated the exposed unvaccinated nurses. |
| Of five unvaccinated dogs, all succumbed to inoculation, by trepanning, of the brain. |
| Prevaccination serologic testing is not indicated for vaccination of previously unvaccinated children in this setting. |
