伝染性でんせんせい Noun Noun English jmdict 1 nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi) medicine infectious;contagious 湿疹も伝染性だって。 The rash is, um, also incredibly contagious.
伝染性軟属腫でんせんせいなんぞくしゅ Noun English jmdict 1 noun (common) (futsuumeishi) molluscum contagiosum;viral infection of the skin