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The Army’s lead for COVID-19 vaccine development said Tuesday the service is “very optimistic” it could have a vaccine available for portions of the population, or at least in place for large-scale clinical trials, by the end of year. Army officials told reporters the Walter Reed Army Institute of Research (WRAIR) will make a decision next week on moving forward with the most promising version of the various vaccines it's worked on, with plans to begin initial clinical human trials…
