Adrian’s immunity produced a higher amount of antibodies for the antigen, preventing the virus. meaning his body built up a defence mechonism for it
Answer:
Adrian's body got prone to the virus when his body was introduced to the virus for the first time. This expose produced antibodies against the antigen.
When his body was again suspected to the same virus which could have spread through touch and direct contact, then his body did not got infection by the virus as it was already having antibodies developed for the antigen.
