Why was a woman who just gave birth unclean?


“Say to the Israelites: ‘A woman who becomes pregnant and gives birth to a son will be ceremonially unclean for seven days, just as she is unclean during her monthly period.’” Leviticus 12:2
            The process of giving birth involves the shedding for some blood and since God created quarantine rules for those who touch blood, that needed to be applied to the woman giving birth (and those who helped her too).
            Blood, as we know today, transfers certain deadly diseases, from Ebola to AIDS.  God developed a quarantine system—separation from the community for seven days—to make sure those diseases weren’t spread.  The woman had time to bond with her child and was given a little vacation, so it probably wasn’t so bad.