The researchers explained that the new vaccine, for example, does not include the SARS-CoV-1 coronavirus, which caused the 2003 SARS outbreak, yet it still induces an immune response to that virus.
In past outbreaks, coronaviruses have jumped to humans through intermediate hosts — SARS-CoV-1, which caused the 2003 SARS outbreak, likely spread from bats to civet cats before infecting humans ...