Answer Happy

c. A patient's blood serum contains neither IgG or IgM antibodies against a particular pathogen. What does this result mean? i. Circle or bold the correct answer on the worksheet: 1. The patient has been recently infected with the pathogen and the adaptive immune system has just been activated 2. The patient does not have an active infection but has most likely has been exposed to the pathogen via a vaccine The patient is suffering an active infection and the adaptive immune system has been fully activated for a while to destroy the pathogen 4. The patient does not have an active infection and has most likely NOT been exposed to the pathogen via a vaccine antehoa