Questions: Is the boy affected by the dead baby because he only knows a world full of death and destruction does the fact the death is of an infant make a difference?
Parallel: on page 190 the boy says, "what you put in your head is there forever?" this parallels a famous unforgettable line earlier in the book on page 12 " you forget what you want to remember and you remember what you want to forget." this is important because the man is trying to hold on to the good memories of his wife but he only gets a little bit but he remembers fully the last night he saw her when she committed suicide.
Contrast: on page 191 the boy wakes up because he has a bad dream and the father comforts him however the dream was that the father did not comfort because the father did not wake up. this foreshadows that the father is getting sicker and it is obvious that he will not be there forever to comfort the boy when he has a bad dream.