Headache is not a predominant symptom for bird flu.
Wiwanitkit
Viroj
V
D000818:Animals; D001717:Birds; D006261:Headache / Q000821:virology*; D006801:Humans; D009980:Influenza A virus; D005585:Influenza in Birds; D007251:Influenza, Human / Q000150:complications*; D013785:Thailand