Updated: August 2026
When mpox re-emerged in Nigeria in 2017 after decades without a recognised outbreak, it initially looked like the return of a relatively uncommon zoonotic disease.
Nearly a decade later, the picture is much more complicated.
Nigeria's experience has helped show that mpox can spread through animal exposure, household contact, close physical contact and sexual networks. It has also shown why strong disease surveillance, laboratory capacity, risk communication and stigma-free healthcare matter when an infectious disease begins behaving differently from what older textbooks describe.
For Nigeria, the most important lesson from mpox may therefore be bigger than the virus itself:
emerging infections can change, and health systems need surveillance strong enough to detect those changes early.
Why 2017 Was Important
Mpox had been recognised in Africa for decades before Nigeria's 2017 outbreak.
However, Nigeria had not reported a recognised human mpox case for many years.
The re-emergence therefore attracted considerable attention from public-health authorities and researchers.
Cases were identified in several parts of the country, challenging the idea that mpox should be considered only a rare infection occurring in isolated rural communities.
The outbreak also marked the beginning of a much longer period of sustained mpox surveillance in Nigeria.
Mpox Did Not Simply Disappear After 2017
One of the important lessons is that Nigeria's mpox problem did not end when the first outbreak received less media attention.
The Nigeria Centre for Disease Control and Prevention continued publishing surveillance reports on suspected and confirmed cases.
By the early 2020s, mpox had become an increasingly important national and international public-health issue.
Nigeria's experience therefore shifted from responding to a single outbreak toward maintaining ongoing surveillance for a disease capable of recurring and spreading through different transmission pathways.
What Changed in Our Understanding of Transmission?
Older descriptions of mpox focused strongly on animal-to-human transmission.
That was understandable.
Mpox is a zoonotic disease, and contact with infected animals remains a recognised route of transmission.
But Nigeria's later experience showed that this was only part of the story.
Research from Nigeria's 2022 outbreak found that adults who had sexual or nonsexual contact with people with mpox had increased infection risk.
Among children, close contact with an infected person and animal exposure were important factors.
This matters because public-health messages need to reflect how infections are actually spreading.
An outbreak response focused only on wildlife exposure would miss important human-to-human transmission.
At the same time, describing mpox simply as a sexually transmitted infection would also be inaccurate.
Why Sexual Transmission Changed the Public-Health Conversation
The international outbreak beginning in 2022 brought much greater attention to transmission during intimate and sexual contact.
That created two challenges.
The first was clinical.
Healthcare workers needed to recognise that mpox lesions might occur mainly around the genitals, anus or mouth rather than always appearing as the classic widespread rash described in older medical materials.
The second challenge was social.
Because many early cases occurred within sexual networks involving gay, bisexual and other men who have sex with men, stigma quickly became part of the outbreak.
That creates a public-health problem.
If people fear judgement or discrimination, they may delay seeking care, avoid testing or withhold information that could help health workers identify contacts.
Effective outbreak control therefore requires accurate risk communication without attaching the disease to a particular identity.
Mpox Is Not Only a Sexual Infection
Nigeria's evidence helps make this point particularly clearly.
Adults may acquire infection through close physical or sexual contact.
Children may acquire infection from household contact or animal exposure.
Healthcare workers can also be exposed when caring for infected patients without appropriate infection-prevention measures.
That means prevention messages should focus on how exposure occurs, not stereotypes about who becomes infected.
For a basic explanation of HIV risk and why infectious diseases should not be confused simply because sexual transmission is possible, read How HIV Is Transmitted: Facts, Risks and Myths.
The Importance of Disease Surveillance
Mpox illustrates why surveillance is one of the foundations of public health.
Surveillance is more than counting cases.
A functioning surveillance system asks:
Where are cases occurring?
Who is affected?
How are people being exposed?
Are cases increasing?
Are new geographical areas being affected?
Are the clinical symptoms changing?
Is a different viral clade involved?
Are people dying?
Are prevention measures working?
Answers to these questions help health authorities decide where to deploy laboratory support, health workers, vaccines, communication campaigns and other resources.
Why Laboratory Confirmation Matters
Mpox can resemble several other conditions.
Skin lesions may be confused with chickenpox, herpes infections, syphilis, bacterial skin disease or other causes of rash.
That makes laboratory confirmation important.
PCR testing of appropriate lesion specimens is commonly used to confirm monkeypox virus infection.
Without reliable laboratory testing, public-health authorities may struggle to distinguish a genuine mpox outbreak from other causes of rash illness.
Laboratory capacity therefore matters just as much as public awareness.
Surveillance Also Needs Good Data
Knowing that a case exists is useful.
Knowing where the patient lives, when symptoms began, what exposures occurred and who may have been in close contact is even more useful.
Good outbreak data can help identify transmission networks and clusters.
Poor-quality data, on the other hand, can make an outbreak appear more mysterious than it actually is.
This principle applies far beyond mpox.
Digital health systems can potentially improve how health information moves between facilities and surveillance programmes.
Our guide to Electronic Health Records explains why structured, accessible and secure health information can strengthen healthcare delivery.
Contact Tracing Still Matters
When a confirmed case is identified, public-health teams may need to identify people who had meaningful exposure.
Contact tracing can help exposed people understand what symptoms to watch for and when medical assessment may be necessary.
It can also help health authorities understand whether transmission is occurring mainly within households, sexual networks, healthcare facilities or other settings.
The usefulness of contact tracing depends heavily on trust.
People are more likely to provide accurate information when they believe their privacy will be respected and they will not be judged.
Why Mpox Vaccination Changed the Response
The original 2017 understanding of mpox response was largely centred on surveillance, isolation and supportive treatment.
Vaccination has since become a more visible component of outbreak control.
Nigeria began targeted mpox vaccination in 2024 after receiving vaccine doses, focusing initially on people considered at higher risk rather than conducting mass population vaccination.
That distinction matters.
Mpox vaccination is not currently equivalent to routine childhood vaccination for the entire Nigerian population.
It is used strategically according to epidemiological risk, exposure and public-health policy.
Why Targeted Vaccination Makes Sense
When vaccine supplies are limited, health authorities need to decide where vaccination will prevent the greatest number of infections or severe outcomes.
Potential priority groups may include people with significant exposure, certain healthcare workers or populations identified as having increased risk during a particular outbreak.
This approach is different from routine childhood immunization, where vaccines are scheduled for large age-defined populations.
For parents looking for routine vaccination information, see our Nigeria Childhood Immunization Schedule guide rather than assuming mpox vaccination forms part of the ordinary infant vaccination timetable.
Mpox and People Living With HIV
Another important lesson from recent outbreaks concerns severe immune suppression.
Having HIV does not automatically mean someone will develop severe mpox.
People taking effective HIV treatment and maintaining good immune function may have very different risks from someone living with advanced, untreated or poorly controlled HIV.
However, severe immunosuppression has been associated with worse mpox outcomes.
This reinforces the value of HIV testing, treatment and viral suppression.
For readers who want to understand testing options, see HIV Self-Testing in Nigeria: How It Works and What to Do After the Result.
Mpox Also Shows Why Stigma Is Dangerous
Disease outbreaks often create fear.
Fear can quickly turn into misinformation.
During mpox outbreaks, misleading claims have included the idea that only certain sexual minorities can become infected or that everyone with mpox must have acquired it sexually.
Neither claim is accurate.
Stigma can undermine outbreak control by making people reluctant to disclose symptoms or exposure.
Good risk communication should therefore do two things simultaneously:
Tell people clearly which behaviours increase risk.
Avoid turning those risk behaviours into labels about entire groups of people.
That balance is central to effective public health.
Animal Surveillance Still Matters
Human-to-human transmission has become increasingly important, but mpox remains a zoonotic disease.
Animal exposure therefore cannot be ignored.
One unresolved scientific question is exactly which animal species maintain monkeypox virus in nature.
Understanding animal reservoirs matters because human outbreaks can potentially be reintroduced even after human transmission has declined.
This is why mpox fits naturally within the One Health approach, which recognises the connections between human health, animal health and the environment.
What Is One Health?
One Health is an approach that brings together professionals working in human medicine, veterinary health, wildlife, agriculture and environmental health.
For zoonotic diseases such as mpox, this matters because investigating only human cases may reveal only part of the transmission cycle.
Understanding animal infections, environmental exposure and human behaviour can provide a fuller picture.
Nigeria's experience with mpox therefore highlights why disease preparedness cannot be limited to hospitals.
The Role of Healthcare Workers
Healthcare workers are often among the first people to notice that something unusual is happening.
Recognising suspicious rashes, taking an appropriate exposure history and reporting suspected cases can help trigger laboratory testing and public-health investigation.
Healthcare facilities also need appropriate infection-prevention practices.
This includes safe handling of specimens and contaminated materials, appropriate personal protective equipment where indicated and measures to reduce unnecessary exposure.
A surveillance system can only work if frontline health workers know what to report and how to report it.
The Role of Communities
Public-health authorities cannot control outbreaks alone.
Communities need enough information to recognise risk without becoming unnecessarily frightened.
Useful community messages include:
Avoid close physical contact with someone who has suspicious active lesions.
Do not share contaminated clothing, bedding or towels.
Seek medical assessment for unexplained rashes after a known exposure.
Provide accurate contact and exposure information to healthcare workers.
Avoid spreading rumours or identifying infected people publicly.
Follow official public-health guidance during outbreaks.
Trust becomes an outbreak-control tool.
Why Social Media Makes Mpox Communication Harder
Health information can now spread faster than outbreaks themselves.
That has benefits.
Public-health agencies can distribute prevention advice quickly.
But misinformation can spread just as quickly.
Sensational photographs, inaccurate claims about sexual transmission, fake cures and conspiracy theories can distort people's understanding of the disease.
This means modern outbreak response increasingly requires not only epidemiological surveillance but also information surveillance.
Health authorities need to understand what communities are hearing and where misinformation is influencing behaviour.
What Nigeria Can Learn for Future Outbreaks
Mpox provides several lessons that apply to other emerging infections.
Detect unusual patterns early
The earlier health authorities recognise a change in disease patterns, the more time they have to respond.
Strengthen laboratory networks
Clinical suspicion needs reliable diagnostic confirmation.
Invest in routine surveillance
Surveillance should continue even when a disease is no longer dominating headlines.
Use data to target interventions
Outbreak response should be based on who is becoming infected and how transmission is occurring.
Communicate without stigma
People cooperate more effectively when they trust public-health institutions.
Connect human and animal health
Zoonotic diseases require attention beyond healthcare facilities.
Maintain preparedness
An outbreak that appears controlled can re-emerge.
Mpox in Africa Is Still Evolving
Mpox remains an important African public-health concern.
WHO continued tracking large numbers of confirmed cases across African countries during 2025 and 2026.
Different countries have faced different combinations of viral clades, transmission patterns, health-system capacity and vaccine availability.
This means Africa's mpox response cannot rely on one universal strategy.
Countries need local epidemiological information.
Nigeria's own surveillance experience is therefore valuable because it provides information from within the population and health system where interventions are being implemented.
What Should Individuals Do?
For most people, the practical advice is straightforward.
Learn the symptoms.
Avoid close contact with someone with suspected or confirmed active mpox.
Seek appropriate medical assessment for a new unexplained rash, particularly after relevant exposure.
Do not rely on photographs from social media to diagnose yourself.
Follow local public-health advice during outbreaks.
And avoid spreading misinformation or stigmatizing people with the disease.
For a detailed explanation of the disease itself, including symptoms, diagnosis and basic prevention, read our Mpox Overview: Signs, Symptoms, Transmission and Prevention article.
Frequently Asked Questions
Why was Nigeria's 2017 mpox outbreak important?
It marked a major re-emergence of recognised human mpox in Nigeria after decades without reported cases and led to sustained surveillance and further research into how the disease spreads.
Is mpox still occurring in Nigeria?
Nigeria continues to maintain mpox surveillance, and mpox remains an important disease monitored by NCDC and international public-health agencies.
Is mpox mainly transmitted by animals in Nigeria?
Animal-to-human transmission can occur, but Nigerian research has also demonstrated important human-to-human transmission, including sexual and nonsexual close contact.
Is mpox a sexually transmitted infection?
Sexual contact can transmit mpox, but it is not the only route. Household contact, other close physical contact, contaminated materials and animal exposure can also play roles.
Why is surveillance important for mpox?
Surveillance allows health authorities to detect cases, identify transmission patterns, monitor geographical spread, investigate contacts and target outbreak-control measures.
Does Nigeria vaccinate everyone against mpox?
No. Nigeria's mpox vaccination programme has used targeted vaccination strategies rather than universal population vaccination.
Key Lessons From Nigeria's Mpox Experience
Nigeria's experience since 2017 shows that:
emerging diseases do not always behave exactly as older evidence predicts
sustained surveillance matters after the headlines disappear
sexual and nonsexual transmission can occur
animal exposure remains relevant
laboratory confirmation is essential
good outbreak data improve decision-making
stigma can undermine testing and contact tracing
vaccination can complement surveillance and prevention
strong public-health systems matter as much as individual behaviour
The Bottom Line
Nigeria's experience with mpox is not simply the story of one infectious disease.
It is a lesson in how modern public health works.
A disease re-emerged.
Its transmission patterns became better understood.
Laboratory systems, surveillance and research generated new evidence.
Vaccination became part of the response.
And public-health communication had to adapt to prevent stigma while still explaining risk.
The broader lesson is simple:
Countries cannot wait until an emerging disease becomes a crisis before building the systems needed to understand it.
Mpox shows why Nigeria needs strong surveillance, capable laboratories, trusted public-health communication and health systems that can adapt as disease patterns change.
References and Further Reading
Nigeria Centre for Disease Control and Prevention. Mpox Situation Reports.
https://ncdc.gov.ng/diseases/sitreps/?cat=8
World Health Organization. Mpox.
https://www.who.int/news-room/fact-sheets/detail/mpox
World Health Organization. Multi-country outbreak of mpox: External Situation Reports.
Ogoina, D., et al. (2024). Mpox Epidemiology and Risk Factors, Nigeria, 2022. Emerging Infectious Diseases, 30(9).
https://wwwnc.cdc.gov/eid/article/30/9/24-0135_article.
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