Assertion: flu | /r/Causes | headache
Facets:
Source sentences:
text: Flu can cause fever and chills, sore throat, muscle aches, fatigue, cough, headache, and runny or stuffy nose.
text: Influenza causes aches, fatigue, headache and chills; these appear to be less common with Covid-19.
text: Flu can cause fever and chills, sore throat, muscle aches, fatigue, cough, headache, and runny or stuffy nose.