Assertion: swine flu | /r/HasProperty | different
Facets:
Source sentences:
text: The seasonal flu jab given to the elderly over the winter months works well against human flu viruses, but swine flu is so different, the vaccine is unlikely to be effective.
text: The swine flu and seasonal flu can coexist during a flu season, but there are a number of differences between them, from how the virus spreads to how long it will be felt in those who contract it; there are also differences how the immune system reacts to them.