Many port workers aren't vaccinated for Covid-19, because they aren't yet eligible.

Covid-19 Response Minister Chris Hipkins says he's concerned that 44% of port workers have yet to receive a single dose.

He says it's a worrying sign of vaccine hesitancy, caused by the spread of misinformation.

But the chairman of the Port Company CEO Group, Charles Finny, says most of those workers would be getting a jab, if they could.

He says only a small proportion of workers are eligible -- because they're deemed high risk, or deal directly with ships.

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