Why did schatz not share his fears with his father or the doctor? Was his silence justified?

In the short story “A Day’s Wait,” Schatz, the young boy, hides his fear and anxiety from his father and his doctor because he thinks he is about to die. It is a charming story of naïveté because this little boy knows only a small piece of the truth, and his innocence makes him fear an impending death, when in reality, he is simply flu-stricken.
He doesn’t share his anxiety and fear with his father and doctor because first of all, he is saddened by the idea, and second of all, they have not acknowledged it. It seems, to him, that this is something the adults would address, but since they have not, he resolved himself to his ultimate fate and prepares for a somber death. He is later relieved to learn that he is not about to die, and his fears are quieted.