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Why will it take so long for a coronavirus vaccine to be ready?

Vaccine development takes a long time because there are many steps in the process. Researchers must ensure the vaccine is safe and causes the correct immune response without causing other problems. There are many stages of tests both in the lab and then clinical trials that must be completed before wide scale production can begin. In the past, this process has taken years, but it is estimated that a COVID-19 virus vaccine will be ready in 12 to 18 months.

Drafted 11 March 2020

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