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A legal expert says it could be possible to pass laws making it legal to discriminate against those who refuse the jab.
About 28% of the population is fully vaccinated and, everyone 12 and older is now able to book one.
Waikato Law Professor Alexander Gillespie says no one should be forced to have the vaccine but there are exceptions in times of emergency.
He says if there is a law brought in, it has to be justified.