Public health labs worry ‘bad data’ could taint US recovery from coronavirus crisis.

Companies are lining up to market an emerging type of blood test to detect whether a person has ever had the novel coronavirus. These antibody tests could be critical to reopening the USA, informing public health and state officials on how and when Americans can resume everyday activities.

https://www.usatoday.com/story/news/health/2020/04/16/coronavirus-antibody-blood-tests-reliable-public-health/2981574001/