High amount of fusobacterium spp found in my throat pcr. should i be concerned? some say its apart of normal flora. others say its serious and can lead to illness. my doctor didnt know what it was. what should i do?

Fusobacterium was long considered normal in the throat, but in recent years has been known to be an occasional cause of pharyngitis. If you have pharyngitis (sore throat, redness, etc), this could be the cause. However, it is an unlikely cause of an enlarged lymph node if that's your only symptom. If uncertain, ask your doctor about consulting with infectious diseases specialist. Good luck.