Coronavirus - Taiwan 2021

Not sure if this is the proper place to post it but is anyone a little concerned about the recent cases here where the people tested positive a long time after they arrived?

There was a cram school teacher recently who tested positive after almost 6 months…

And now a businessman after 3 months…

Negative PCRs coming in followed by positive PCRs and IgM antibodies months later make it look like these could be local infections. Esp. for the teacher.

Taiwan can’t vaccinate soon enough and should do whatever it takes to get vaccine.