Effects of Merck & Co., Inc.(Jobs)'s Chickenpox Vaccine Fade Over Time

March 15, 2007 |

1 min read

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BOSTON (Reuters) - Merck’s chickenpox vaccine Varivax not only loses its effectiveness after a while, but it has also changed the profile of the disease in the population, U.S. researchers reported on Wednesday.>>> Discuss This Story

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Merck & Co.