Assertion: immune system | /r/HasProperty | the reason
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The immune system is often the reason we feel unwell when we have an infection, but is the reason we recover from that same infection.
text: Your immune system is the very reason why many symptoms (such as fever, headaches and flu-like illness) are usually only experienced during the “primary” outbreak or first exposure to the virus.
text: The immune system is often the reason we feel unwell when we have an infection, but is the reason we recover from that same infection.