You are not alone - FB flagged 8 posts by a friend (who is also a freeper in good standing, though I don't recall her screen name) for "spam". All were pertaining to the virus and/or the over-reaction by government officials. They later claimed that their algorithms had a "bug". Perhaps FB has/is a virus in itself.
Could be this (from LJ Post 1654):
https://twitter.com/lundgren4life/status/1240117951354638336?ref_src=twsrc%5Etfw
people need to remember when it comes to facebook - consumers are not “users” - they are the product!