Nowhere does the article mention which kind of test was run. Was it qPCR or serological? The latter tests whether you have had an infection. The former tests w

Nowhere does the article mention which kind of test was run. Was it qPCR or serological? The latter tests whether you have had an infection. The former tests whether you currently have one. The distinction between presymptomatic and asymptomatic is tricky as well, but is less of an issue with a serological test than a qPCR.