This could be happening and not being reported, but I would think the Flight Attendant and Pilots Unions, and to a lesser extent the baggage handlers would be up in arms about this. They’re exposed to who knows how many communicable diseases day in and day out. And their families by definition would be at great risk as well.
An immediate strike is warranted.
I just told hubby that, earlier today...if the airline brass can’t or won’t say anything, surely those at risk, on the front lines, will.