Translation:

Top:
"Syphilis
is a social scourge
The victims are uncountable"

Middle left:
"Numerous are those who are affected without knowing.
Syphilis of a couple is one of the principale cause of disease and death among new-borns and children."

Middle right:
"Many chronical diseases are of syphilitic origin. Syphilis is a serious illness, but thankfully curable."

Bottom:
"For every SYPHILITIC, it is a duty to cure themselves and to avoid transmitting its disease."

Great find there, I had a great time!

Concerning the french flag: the meaning of the colors aren't related to ecclesiasts neither to "Liberté, Egalité, Fraternité" (which was invented far later).

The story behind that choice of colours is much more complicated than that.

I confirm that this is staged. Groland is a french comedy show broadcasted weekly on Canal+.

Still funny.