 
 <prompt> Wetin be di virus wey no dey attack di immune system? Based on di question wey dey before dis one, write small tori wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: One of di ways wey fit prevent or slow down di transmission of infectious diseases na to sabi di different characteristics of different diseases. Some important disease characteristics wey dem suppose check include how strong di disease be (virulence), how far victims dey travel, and how contagious di disease be. For example, di human strains of Ebola virus dey make their victims weak sharp sharp and kill dem quick quick. As e dey so, di victims of dis disease no dey get chance to waka far from where dem catch di infection. Also, dis virus dey spread through skin wounds or places wey dey allow am enter like eye. So, di early stage of Ebola no too dey contagious because di victims dey only experience internal bleeding. Because of all dis, di spread of Ebola dey very fast and e dey usually dey within one small area. On di other hand, di Human Immunodeficiency Virus (HIV) dey kill its victims very slowly by attacking their immune system. Because of dis, many of di victims dey pass di virus go other people before dem even know say dem get di disease. Also, di small small virulence allow di victims waka long distances, wey dey increase di chance of epidemic. 