inherited immunity

18 LETTERS · STARTS WITH I

inherited immunity is a valid 18-letter word worth 28 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1H4E1R1I1T1E1D2I1M3M3U1N1I1T1Y4

1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 4 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does inherited immunity mean?