Research the term seroconversion. Explain in layman's terms the statement, "Anti-HBs titers are used to determine seroconversion."

What will be an ideal response?

Seroconversion means there is a change in antibody status from negative to positive (ie, absent to present).
Antibodies detected in the patient's blood that are directed against a protein found on the surface of the hepatitis B virus indicate the patient is recovering or recovered from an infection with hepatitis B virus.