"Let us suppose that the child who is not vaccinated contracts rubella while his mother is pregnant. Let us also suppose that this unborn child is then infected and born with birth defects. This is not an unreasonable scenario, especially for those who tend to have larger families. The most likely transmission is from a born child to one who is unborn. What will be the lesson that the child learns as he sees his brother or sister born with such defects? Will he say to himself, “Yes, we must suffer even this, in order to show our strong opposition to abortion”? Or will he say, “No, this cannot be right. How does the suffering of my brother or sister advance the cause of abolishing abortion?” This question would be especially troubling for a child who realizes that his sibling has suffered this calamity because he himself has contracted the disease and passed it on. The child should understand, of course, that what has happened was not his fault, but it may not prove easy for him to distinguish between his role as the source of the disease and his innocence of any moral responsibility. And if he is not to blame, who will the child hold responsible for this tragedy?"