séroprévalence

Séroprévalence refers to the proportion of a population that has antibodies to a particular infectious agent, as detected in their blood serum. This indicates past or present infection with the agent. It is a key epidemiological measure used to understand the spread of diseases within a community.

To determine séroprévalence, blood samples are collected from a representative sample of the population. These samples are then tested for the presence of specific antibodies using various laboratory techniques, such as ELISA or Western blot. The percentage of individuals in the sample who test positive for these antibodies is the séroprévalence rate for that agent in that population at that time.

Séroprévalence studies are valuable for several reasons. They help estimate the true incidence of infections, including those that are asymptomatic or undiagnosed. They can also reveal patterns of disease transmission, identify high-risk groups, and inform public health interventions such as vaccination campaigns. Tracking changes in séroprévalence over time can monitor the effectiveness of control measures and predict future trends. This data is crucial for public health planning and resource allocation.