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None of the candidate vaccines in advanced clinical trials so far has demonstrated a “clear signal” of efficacy at the level of at least 50% sought by the WHO
Yea, get your scientific information from the news media!
More than 100 vaccines are being tested worldwide
Planning underway for Phase 3 study; study expected to begin in the fall of 2020
Support grows for a controversial ‘human challenge’ vaccine study—but no trial is yet planned