ציטירנדיקער פּירוש אויף בראשית 5:8

אלה תולדות יעקב, יוסף, “these were the descendants of Yaakov: Joseph;” the reason why this has been repeated here is because the Torah had interrupted reporting about Yaakov’s children who had been sired and born while he was with Lavan, Joseph having been the last of those. We find that the Torah employed a similar manner when describing Noach (Genesis 5,8) as siring three sons, interrupting with a description of the sins which led to the deluge, before returning to the subject in Genesis 6,9 with the words: אלה תולדות נח, although we had already known who his children were.

Our sages in Erchin 3 explain the word אדם as meaning that even a baby can be afflicted with the disease related here as babies too qualified for the term אדם. Women too are included as the Torah refers to man and woman combined as אדם in Genesis 5,8.