A registered nurse at the Altoona Center for Clinical Research in Duncansville, PA begins the process of preparing refrigerated doses of Pfizer's Lyme disease vaccine (Gary M. Baranec/AP Images)
Pfizer was warned of Lyme study problems months ago, trial research startup's CEO tells employees
A contract research startup working on Pfizer’s Lyme vaccine trial alerted the drugmaker to problems with the study last year, but was told to keep …
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