00:01
Here, this question wants to know which of these is not a factor that determines if an infectious disease actually occurs.
00:19
Let's look at these and see which one is not a factor.
00:23
Well, the first one says the number of organisms.
00:26
And that is true.
00:28
That would be called pathogen load or viral load.
00:30
So the number of pathogens that get into the host can determine if disease occurs or not.
00:49
Of course, the more pathogens that get into the host, the more likely you're going to have disease because some of them are going to sneak past the host's immune system.
00:59
So that is a reason.
01:00
Next, mode of entry.
01:02
That's also important.
01:05
If it comes in by breathing again, through the nose, through the mouth, in the blood, the mode of entry is important as to whether the infectious disease occurs or not...