infection thread

16 LETTERS · STARTS WITH I

infection thread is a valid 16-letter word worth 24 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1F4E1C3T1I1O1N1T1H4R1E1A1D2

1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 2 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does infection thread mean?