The world's first sperm bank has launched for HIV-positive people in an effort to reduce the disease stigma.

Sperm Positive has begun with three male donors from across New Zealand who are living with HIV but cannot pass the virus on.

Their medication ensures they have an undetectable viral load, meaning the amount of virus in their blood is low.

Although it doesn't mean the patient is cured, there is no possibility they can transmit the virus to a sexual partner or child.

Sperm Positive is an awareness campaign and is not operating as an actual fertility clinic, but said it could connect people with one if they wanted to have a baby using a donor's sperm.

HIV-positive people are now donating sperm in a move to end stigma against the disease

Damien Rule-Neal was one of the first to donate to SpermPositive.

He was diagnosed with HIV in 1999 but was confirmed undetectable after starting treatment some 18 years ago.

He said there was still a lack of education among the public in New Zealand about what an undetectable status meant, and that he had experienced stigma about living with HIV in both his work and personal life.

'I have many friends who are also living with HIV who've gone on to have children,' the married man said.

'Being able to help others on their journey is so rewarding, but I also want to show the world that life doesn't stop post-diagnosis and help to remove the stigma.'

The online sperm bank said it will be made clear to people looking for a donor that they have HIV but are on effective treatment and so cannot pass the virus on.

The initiative, created by the New Zealand Aids Foundation, Positive Women Inc and Body Positive, hopes to educate people in New Zealand about HIV transmission.

Dr Mark Thomas, an infectious diseases doctor and Auckland University associate professor, said he had seen changes in public opinion after working with those diagnosed with HIV for more than 30 years.

He said: 'I'm glad to say that in this time there have been great changes in public understanding of HIV, but many people living with HIV still suffer from stigma.

'Stigma can lead to inconsistent taking of medicines, and result in much less effective treatment of HIV, and risk of transmitting HIV.

'Fear of stigma and discrimination can stop people at risk from getting tested, and those living with HIV from accessing treatment and support.'

As well as informing the public, the online clinic aims to give people diagnosed with the virus the opportunity to create life and to raise awareness that fertility services are available for them.

The online bank, initiated by the New Zealand AIDS Foundation (NZAF), Positive Women Inc and Body Positive, was launched ahead of World Aids Day 2019, on December 1.

HIV is spread by certain body fluids, including blood, semen, vaginal fluids, and breast milk.

The chance of any HIV-positive person with an undetectable viral load transmitting the virus to a sexual partner is scientifically equivalent to zero, scientists have confirmed.

However, criteria to donate sperm includes having a screening for medical conditions, including sexually transmitted infections (STIs), for example HIV.

As it stands, individuals living with HIV in the UK are unable to donate sperm or eggs.