Blackcrow said: "Oh look. Viral spike protein shedding in the urine in acute infection."

Thanks! That gave me a lead to look for.

COVID-19 vaccines, irregular periods and spike protein shedding
24 Apr 2021

https://www.nebraskamed.com/COVID/the-co....

Spike protein is primarily made locally in muscle where the vaccine is administered and may possibly be seen in low levels in the blood," says Dr. Lawler [infectious diseases expert James Lawler, MD, MPH]. "But it should not be shed in significant quantity in respiratory or other secretions.

"May possibly." "Should not." "Significant quantity." Wait a minute. You DON'T KNOW?

Not that spike protein shedding itself is anything to be concerned about, but the extent to which it does occur indicates how pervasive the spike protein is within the body which IS something to be concerned about.

BTW, Dr. Lawler's name shows up in a lot of COVID-19 vaccine Q&A articles. I don't know if he had anything to do with vaccine development.