COVID-19: Road to a vaccine

Several months into the COVID-19 pandemic, are we any closer to a vaccine?

With confirmed coronavirus cases now above 10 and-a-half million and more than a half-million deaths, the U.S. government said it aims to deliver 300 million doses of a COVID-19 vaccine by next January under a program it calls Operation Warp Speed. Pharmaceutical and biotech companies around the world are racing to live up to that name.

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