You and a friend were in line for a movie when you noticed the woman in front of you sneezing and coughing. Both of you were equally exposed to the woman's virus, but over the next few days, only your friend acquired flu-like symptoms and was ill for almost a week before recovering. Which one of the following is a logical explanation for this?
A) Your friend had antibodies to that virus.
B) You had an adaptive immunity to that virus.
C) Your friend had an autoimmune disorder.
D) Your friend had allergies.

Question

Quizplus · Accepted Answer

You likely had an adaptive immunity to that virus, meaning your immune system had previously encountered either this virus or one similar enough to it, allowing it to quickly recognize and fight off the infection before you showed symptoms. Adaptive immunity can come from previous infections or vaccinations and provides specific protection against pathogens.

You and a Friend Were in Line for a Movie