Numbers are only useful when they tell you something you can act on. The point of this article isn’t to frighten you. It’s to give you the context that makes HIV prevention decisions rational rather than emotional. When you understand where HIV is in Nigeria, who it affects most, and what the trends show, you can make better decisions about testing, PrEP and your own risk.

Nigeria’s HIV epidemic at a glance.

Nigeria has the fourth-largest HIV epidemic in the world by absolute number. Only South Africa, India and Mozambique have more people living with HIV. That reflects both Nigeria’s population size and years of limited testing coverage, which allowed infections to build up before the treatment programme reached its current scale.

The 1.4% national prevalence means that, across Nigerian adults, roughly 1 in 70 people is living with HIV. That isn’t catastrophic, but it isn’t trivial either, and it’s spread very unevenly across the country.

Where the burden is heaviest, zone by zone.

Nigeria’s HIV epidemic isn’t evenly distributed. The South-South zone carries the heaviest burden overall, and a handful of states, Benue in the North Central and Rivers, Akwa Ibom and Edo in the South-South, record rates two to four times the national average. Much of the North-West records prevalence well below 1%. That variation has direct implications for personal risk.

The five states with the highest modelled HIV prevalence are Benue (about 5.7%), Rivers (about 5.2%), Akwa Ibom (about 3.5%), Edo (about 3.4%) and Taraba (about 3.0%). In Benue and Rivers, roughly 1 in 20 adults is living with HIV. In practice, that means unprotected sex with a partner whose status you don’t know carries noticeably more risk in these states than in lower-prevalence areas.

Where HIV is spreading most actively right now.

The Federal Ministry of Health recorded 102,025 new HIV infections across Nigeria in 2025. Lagos alone accounted for more than 10% of them, reflecting its size and the challenge of reaching everyone in a city of over 20 million people.

Kano and Kaduna appearing on this list is a reminder that low prevalence doesn’t mean zero infections. Kano’s large population means even a low percentage adds up to thousands of new infections a year. That’s the difference between prevalence (how many people have HIV) and incidence (how many get it each year).

Women carry a disproportionate share of Nigeria’s HIV burden.

UNAIDS 2024 estimates put HIV prevalence at about 1.5% among Nigerian women aged 15 to 49, compared with 0.8% among men. Women are almost twice as likely to be living with HIV. The reasons are structural: receptive vaginal sex carries a higher risk per act than insertive sex, relationships between younger women and older men with more past exposure are common, and many women have limited power to insist on condoms.

Young women aged 15 to 24 are hit hardest. That’s the group in whom the PURPOSE 1 trial found zero new infections with the lenacapavir injection, and the group for whom easy, low-effort prevention matters most. See PrEP for women in Nigeria.

How Nigeria’s HIV response has progressed.

Nigeria’s treatment programme has made significant gains. According to NACA figures from December 2025:

The 87% diagnosis rate means roughly 260,000 Nigerians are living with HIV without knowing it, mostly people who feel healthy and haven’t tested recently. The 95% viral suppression rate means the vast majority of people in HIV care can’t pass HIV on through sex.

The 46% fall in new infections over the past decade is real and meaningful. But 102,000 new infections in one year means the epidemic is far from over, and the 13% of people who don’t yet know their status continue to drive transmission.

Turning the statistics into personal context.

Statistics describe populations. Your own risk depends on your situation: where you live, your sexual life, and whether you know your partners’ status.

If you live in a high-burden state (Benue, Rivers, Akwa Ibom, Edo), an unknown partner is roughly two to four times more likely to be living with HIV than the national average. PrEP is strongly worth considering.

If you live in Lagos, Abuja or another big city, the sheer number of new infections reflects how many people live there and how often exposures happen. Lagos records more than 10,000 new infections a year, even though its prevalence isn’t the highest.

If you have sex without knowing a partner’s status, the most relevant number is the 13% of people living with HIV who don’t know it yet. They haven’t tested, so they can’t tell you, and they may not be on treatment. Your protection can’t depend on them: condoms, PrEP, or seeing a partner’s recent test result for yourself are what keep you safe.

If you’re a woman aged 15 to 35, the gender gap is directly relevant. PrEP, including the twice-yearly lenacapavir injection if you’d rather not take a daily pill, is designed for exactly your situation.

Questions about HIV in Nigeria.