"Vaccination works to stimulate a specific immune response that will create memory B and T cells specific to a certain pathogen. These memory cells persist in the body and can lead to a quick and effective response should the body encounter the pathogen again."
its the same idea...
In a normal situation...
Elijah should confirm what Greta asked for, and what is in his coffee.
And he should either ask to add the ingredients he wants, and pay some more money...
Or drink the rest of the coffee and move on, maybe being careful to get his specific order next time.
Or don't ask Greta to order his coffee for him ever again.
Answer:
I the protease inhinitor prevent s the vieal dna