An HIV-positive man has confessed to injecting his blood into his sleeping wife and infecting her with the virus that can cause Aids, according to reports.

The man reportedly wanted to infect his wife with the disease so she would start having sex with him again, New Zealand's Sunday Star-Times said.

Court documents detailed how the man, 35, twice pricked his 33-year-old wife with a sewing needle laced with his infected blood.

The husband discovered he was HIV-positive — but his partner and children were not — during health checks imposed on them when the family arrived in New Zealand in 2004.

The woman had said she wanted to maintain the relationship for the sake of the children.

But she refused to have sex with her husband for fear of contracting the disease.

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