Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, recently said that a COVID-19 could take 12 to 18 months to develop, test and approve for public use. But new vaccines typically take years to earn approval — can we really expect a coronavirus vaccine to be ready by summer 2021?      

Experts told Live Science that, for any other vaccine, the timeline would be unrealistic. But given the current pressure to stave off the pandemic, a COVID-19 vaccine could be ready sooner, as long as scientists and regulatory agencies prove willing to take a few shortcuts. 

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