Answer:
We can see that Lucy has ADA-SCID due to the constant infections that she has, generated by microorganisms that are easily fought by the immune system.
Explanation:
ADA-SCID is a hereditary cataresis syndrome that leaves a person's immune system highly weak and sensitive, failing to combat simple microorganisms that pose no danger to humans with the normal immune system. People with these syndromes basically have no defense in their bodies and often have infections caused by organisms that are easily fought by a healthy immune system. In addition, these infections can progress to more severe clinical cases.
