COVID-19 vaccines: Could a single vaccine work against SARS, MERS, other coronaviruses?

Researchers are working on prototypes of a so-called 'pancoronavirus vaccines' with promising, but early, results from experiments on animals.

from http://www.firstpost.com/tech/science/covid-19-vaccines-could-a-single-vaccine-work-against-sars-mers-other-coronaviruses-9288541.html