original_query: What is seroconversion and how does it occur?
query: What is seroconversion and how does it occur?
answer: Seroconversion is the development of specific antibodies in the blood serum as a result of infection or immunization.  It occurs when antigens enter the blood, triggering the immune system to produce antibodies. Initially, the antibody may be present but undetectable. After seroconversion, the antibody becomes detectable by standard techniques.