Adisease that someone is more susceptible to get when they have aids

HIV is more susceptible for someone with aids to get.

The answer is HIV. 
Aids is the virus that comes before HIV, so you are definitely more susceptible to getting it.
If there's options please comment them.
If you do have aids, you are also more susceptible to infections.
Hope this helps :)

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.