http://www.sciencemag.org/news/2020/01/scientists-are-moving-record-speed-create-new-coronavirus-vaccines-they-may-come-too

Staff sell face masks at a pharmacy in Wuhan, the epicenter of the novel coronavirus outbreak, on 22 January.

In the stock pandemic movie, scientists are frantically working on concoctions to stop the spread of a newly emerging virus—and by the end, voila, they succeed and save the world. In the real world, vaccines played limited, if any, roles in slowing the Zika epidemic that walloped Latin America in 2016, the devastating 2014-2016 West African Ebola epidemic, and the pandemic flu that began circulating in 2009. The shots just weren’t ready in time.