Answer:
1. children you only use 2 fingers
2. adult its 30 chest compression to 2 breaths, children its 15 to 2
3.you have to use a different size mask for a child
Reusing or sharing needles, really anything that can be spread through blood and drugs.. i hope this helps and sorry its so brief.
So Sam has the disorder and one of his parents are likely the carrier since Sam is their son. That’s all I can provide since that’s all the info I was given.