Assertion: vaccine's virus | /r/CapableOf | mutate in such a fashion
Facets:
Source sentences:
text: What will happen in many viruses is you'll get infected by Strain A; your immune system learns to recognize that surface protein, but then the virus is able to mutate in such a fashion that it still performs its function but make it so that your antibodies against Strain A no longer recognize Strain B," Dr. Bedford said.