Nurses are questioning the number of people who voted yes to the latest offer.

The nurses' union is ignoring calls to release the results of a secret ballot that endorsed Tuesday's pay deal.

Some members of the New Zealand Nurses' Organisation (NZNO) are infuriated at the union's acceptance of the District Health Boards' collective agreement, and are doubtful of a claimed significant majority decision.

Many are taking their anger to the Facebook forums that helped propel strike action.

KEVIN STENT/STUFF New Zealand Nurses' Organisation industrial services manager Cee Payne says there was an significant majority of members who voted to ratify the fifth version of the District Health Boards' collective agreement.

A Tauranga Hospital nurse, who did not want to be named, told Stuff there was little faith in the union and its claimed majority.

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"At work I know of only one person that voted 'yes'. Considering the offer was little different from what we were striking over, I struggle to see how everyone voted 'yes'."

SUPPLIED Administrators for the Florence Smith, 'New Zealand, please hear our voice' Facebook page chose to take a 24-hour break following NZNO members' vote to ratify the DHBs collective agreement announced Tuesday.

Many of the concerns that fuelled the strike remain. Inadequate staff numbers have nurses burnt-out and calling in sick, creating unsafe conditions for patients.

The promised 500 extra staff will make little difference spread across the country's wards, the nurse said.

"I don't know how they can recommend this deal. We are getting probably 15 per cent less than school teachers … we're coming under a lot more assault, we're in a way more stressful role. I could kill someone."

Nurses were largely unwilling to speak out for contractual reasons, but many online were asking for the ballot result to be published.

NZ Nightingales Fight for Fair Pay spokeswoman Danni Wilkinson said online chatter suggested the majority was not overwhelming.

"Obviously it was a majority because we've accepted it, but the 'overwhelming' was probably a little disingenuous and inaccurate."

NZNO has maintained a strict policy of keeping voting numbers and results under wraps throughout the almost year-long negotiations.

The union, which represents about 30,000 nurses, midwives and healthcare assistants in the public health system announced its members had voted in favour of the fifth version of the DHB deal on Tuesday.

A majority online vote, run by Electionz.com, had NZNO avoid a repeat of the national strike in which members walked off wards for 24 hours last month, causing major disruption to public hospital schedules and service provision.