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What COVID-19 Seroprevalence Surveys Can Inform Us

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What COVID-19 Seroprevalence Surveys Can Inform Us

Antibody towards SARS-CoV-2

Serology, or antibody, testing checks a pattern of an individual’s blood to search for antibodies towards SARS-CoV-2, the virus that causes COVID-19. Antibodies normally turn out to be detectable within the blood 1-3 weeks after somebody is contaminated.

Individual contaminated → 1-3 weeks → individual has detectable stage of antibodies*

*Some individuals could take longer than 3 weeks to develop antibodies, and a few individuals could not develop antibodies. It’s presently unknown how lengthy antibodies are detectable after an infection.

A optimistic outcome from this take a look at could imply that an individual was beforehand contaminated with the virus.

Constructive (pattern optimistic for SARS-CoV-2 antibodies)

Damaging (Pattern damaging for SARS-CoV-2 antibodies)

Seroprevalence

The proportion of people in a inhabitants who’ve antibodies to an infectious agent is named seroprevalence.

Seroprevalence Survey

A seroprevalence survey makes use of antibody exams to estimate the share of individuals in a inhabitants who’ve antibodies towards SARS-CoV-2.

This may inform us how many individuals in a particular inhabitants could have been beforehand contaminated with SARS-CoV-2.

A small pattern of individuals taking part within the survey represents a bigger inhabitants, which could possibly be a neighborhood, state, or particular inhabitants (like healthcare staff or pregnant individuals).



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