| 11. | Mass immunization drives aim to eliminate the virus from the environment by breaking its transmission cycle.
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| 12. | Mass immunizations did it, at a cost of more than $ 500 million in the Americas.
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| 13. | But the disease was nearly forgotten in the West after mass immunization was introduced in the 1920s.
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| 14. | The city has not offered mass immunization against the disease since an outbreak in the early 1980s.
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| 15. | Mass immunizations have been instrumental in controlling and even eradicating viral diseases, including smallpox, polio and whooping cough.
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| 16. | UNICEF attributes Philippine success against polio to a mass immunization program for children under age 5 begun in 1993.
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| 17. | Merck editors voted " mass immunization campaigns " as the second most important medical advance of the 20th century.
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| 18. | But today, most governments conduct mass immunizations, which reach 80 percent of children and save three million lives a year.
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| 19. | Han said the figure had been drastically reduced to 699 clinically confirmed cases in 1994 thanks to mass immunization efforts.
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| 20. | Eradication of other diseases, however, is closer, and mass immunization programs as part of FID may be a major tool.
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