The death of a Dunedin man is being investigated by health officials and the coroner to ascertain whether it could be connected to the Covid vaccine he received 12 days earlier.
Rory James Nairn, 26, died on November 17 at the home he shared with his fiancee Ashleigh Wilson.
His death has been referred to the coroner and the exact cause is yet to be determined.
Nairn received his first dose of the Pfizer Covid-19 vaccine on November 5.
Health officials are also aware of Nairn's death but cannot comment because of the coronial investigation.
"The causes and circumstances of death have yet to be determined," said the spokesperson.
Ministry of Health Covid-19 Vaccine and Immunisation Programme national director Jo Gibbs confirmed the Centre for Adverse Reactions Monitoring had also been informed.
"The report was made because they had previously received their Covid-19 vaccination," Gibbs told the Herald.
"For privacy reasons, we cannot confirm any details of the deceased person. Their death has been referred to the Coroner's Court, so we are unable to comment."
Gibbs' said Nairn's death was "incredibly sad" and the ministry's thoughts went out to his family and friends.
Wilson agreed to speak to the Herald about the tragedy two weeks to the day after Nairn died.
She hoped sharing his story would spark more awareness around the vaccine, what people should watch out for in terms of side effects and when they should seek medical help.
She felt not enough information was made public about adverse reactions and that meant people like Nairn were too casual about what they were experiencing and were more likely to ignore symptoms than seek help.
Wilson herself is double vaccinated.
She appreciated the Government and public health agencies did not want to "scare" people off getting the vaccine - but said people had a right to know everything about it, and what it could do.
She also hoped speaking out might help her get answers about her partner's death faster.
The coronial process can take months or years and she was desperate to know as soon as possible why the love of her life died.
"My main fight is just to find out why," she told the Herald.
"And to bring more awareness… maybe if there was more information about possible side effects and when people should go to hospital Rory would still be here now."
She acknowledged the official health websites had information about the vaccine including side effects, and that people are given a pamphlet to take away after their jab.
But she felt the heart-related symptoms were "downplayed" in the literature and the messaging needed to be clearer and more widely spread.
"It's all a bit blase. Yes, you get that little pamphlet, but you just don't hear about any adverse cases," Wilson said.
"Rory wasn't worried about his symptoms until that night. But if you have symptoms to do with your heart you really need to get to hospital to get answers."
Wilson hoped people would take their health more seriously after reading Nairn's story.
"It's been two weeks. It's been really rough," she said.