Here is an article that talks about how 5G may be causing the symptoms of C-19, then they just use the PCR test to up the number of cases (my conjecture), but here is the article:

https://manhattanneighbors.org/5g-corona/

And here is the paper from the Journal of Molecular and Cellular Medicine:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3780531/