Long-term greenies breed and expand. Red zones live isolationist lives based on elaborate distancing cultures. Masks come to be decorated in coded ways with elaborate indications of affiliations, history of infections etc. Slowly die out.
Sounds like bad scifi but... maybe? 
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Gattaca
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Sounds like "Children of Men"
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AR overlays with antibody attestation on blockchain. Restaurants would have similar ratings based on purity of their supply chain.
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Elysium remake looking good!
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Tangentially related:https://twitter.com/thinkwert/status/1243913430534361088 …
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