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  • Title: Analysis of a measles epidemic; possible role of vaccine failures.
    Author: Rawls WE, Rawls ML, Chernesky MA.
    Journal: Can Med Assoc J; 1975 Nov 22; 113(10):941-4. PubMed ID: 1192310.
    Abstract:
    A measles epidemic occurred in the Greensville (Ont.) Unit schools during January and February 1975. There were 47 cases of measles in 403 students: 26 (55%) of the children had a history of being vaccinated and 18 (38%) had not been vaccinated. Among children known to have been vaccinated at less than 1 year of age 7 of 13 contracted measles, while among the 48 children who had not been vaccinated 18 contracted measles. The attack rate among vaccinees increased with increasing time since vaccination. The observations of this study as well as those of similar studies suggest that vaccine failures contributed to the genesis of the epidemic. It is recommended that all children initially vaccinated at less than 1 year of age should be revaccinated with live attenuated measles virus vaccine.
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