Answer:
He is afraid of being infected. What horrors does the narrator witness during regular walks to his brother's house? People are dying on the streets, women shrieking and crying, and people do harm to themselves and others.
Explanation:
Annoyance
Fury is like really mad
Outrage is kinda like insanity
Wrath is really really mad
(Based on my opinion)
The answer is going to be true