Word: vaccinees
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In clinical trials examined by the researchers, vaccine recipients had a 50 percent lower risk of TB than non- recipients. In the same trials, the BCG vaccinehad protected patients from death by TB 71 percentof the time.
The report followed a nine-month investigation and data analysis of 1,264 worldwide studies done on the vaccine during the time period of 1930-1990.
The study, co-authored by Dean of the School of Public Health Harvey V. Fineberg, was prompted by a rise in the incidence of TB nationwide as well as scientific controversy about the effectiveness of the vaccine.
"The results have varied and often people have focused on the fact that they vary verses overall whether the vaccine is effective," said Associate Professor of Epidemiology Dr. Graham A. Colditz, the study's lead author.
Colditz, who is also associate professor ofmedicine at Harvard Medical School, said the aimof the investigation was to evaluate theeffectiveness of the vaccine and to explorevariation among the different studies.