If TPTB want a new wave somewhere, why would't they just send in infected agents? Illegal borders crossers processed out without any medical tests and flown to any spot in the country, for example.
No different, concept-wise than open carry allowed, except for violent crime ex-cons or mentally unstable persons.
At some point, risk assessment measures need to be planned for. There are bad guys out there.
The 100% purity edict imposed on political figures hovers over the perimeters of the farcical at times