Here is 164 doctors consensus on wearing m@5k5. This is opinions from all these doctors, so if this is fact checked, you clearly know where facebook motives lie.
They lie towards lying. They lie towards censorship. They lie towards hiding board certified doctors that have important things to say, just like they fact checked hydroxychlouriquine as an effective treatment method, that is now accepted internationally.
So why again do we need a vaccine?
Anyways, listen to these 164 doctors on what they say about masks.