Seroprevalence or seroepidemiology assesses the number of people, in a given population, who have been exposed to a microorganism, or vaccination, and who develop specific antibodies at significant levels (for diagnosis - sero-positive people - , or for prevention - protected or immunized persons -).

Antibody detection techniques are the serological tests, then performed on the whole population or on a representative sample of it. Seroprevalence is often presented as a percentage or even as cases in a population of 100,000. Notes and edit the code

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