Vaccine offering droplet? We’re all in this together (8)

I believe the answer is:

immunity

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'vaccine offering droplet? we're all in this together' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for immunity that I've seen before include "legal protection?" , "Resistance to infection" , "Protection or exemption from something" , "Exemption; resistance" , "I'm involved in mutiny, with special exemption (8)" .)

I've seen this clue in the Sydney Morning Herald.

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