Lassa Fever Alert: Ondo Identified as Nigeria's Highest-Burden State as NCDC Begins Fresh Preparedness Drive
Lassa Fever Alert: Ondo Identified as Nigeria's Highest-Burden State as NCDC Begins Fresh Preparedness Drive
By Iroyin Yoruba Television News Desk
Ondo State has been identified as the highest-burden state for Lassa fever in Nigeria in 2026, prompting renewed concern from health authorities as the country begins preparations for the next peak transmission season.
The Nigeria Centre for Disease Control and Prevention has named Ondo, Bauchi, Taraba, Edo and Benue as the five states carrying the largest share of Nigeria's confirmed Lassa fever cases this year.
Together, the five states account for 86 per cent of confirmed Lassa fever cases recorded in Nigeria in 2026, according to the latest warning from the NCDC Director-General, Dr Jide Idris.
The warning is particularly important for Ondo because the state alone accounted for approximately 33 per cent of Nigeria's confirmed cases by epidemiological week 33, making it the country's leading high-burden state.
The latest development does not mean that Ondo is experiencing a new outbreak declared today.
Rather, the NCDC is warning that the existing burden of Lassa fever requires stronger preparedness before the period when transmission traditionally increases.
Lassa fever occurs throughout the year in Nigeria, but cases generally rise during the dry season, particularly between November and April.
The agency is therefore using the months before the peak period to strengthen surveillance, improve preparedness at health facilities, protect healthcare workers and encourage communities to reduce the environmental conditions that allow the disease to spread.
The warning comes after Nigeria recorded more than 1,000 confirmed Lassa fever cases and 252 deaths during the first 33 epidemiological weeks of 2026, according to the latest situation-report figures available before the new preparedness announcement.
The case fatality rate reached 24.4 per cent, considerably higher than the corresponding figure recorded during the same period in 2025.
For Ondo State, the figures place additional responsibility on health authorities, local governments, hospitals and communities to strengthen prevention and ensure that suspected cases are detected and treated quickly.
Ondo Leads Nigeria's Lassa Fever Burden
The identification of Ondo as the highest-burden state is not entirely new.
The state has repeatedly appeared among the areas with the highest number of Lassa fever infections in Nigeria.
The latest NCDC data show that Ondo accounted for about one-third of confirmed cases recorded nationally by week 33.
Bauchi followed with 25 per cent, while Taraba accounted for 13 per cent, Edo 10 per cent and Benue six per cent.
The remaining 18 affected states collectively accounted for the balance.
This concentration of cases is significant because it means that public-health authorities can potentially make a major difference by directing additional surveillance, testing capacity, treatment resources and public-awareness activities toward high-burden areas.
It also means that residents in Ondo need to take the warnings seriously.
Lassa fever is not a disease that should be treated as an ordinary fever.
Early symptoms can resemble other common illnesses, making it difficult to identify without appropriate medical assessment.
The longer an infected person remains undiagnosed and untreated, the greater the risk of severe disease and death.
This is one reason the NCDC has repeatedly emphasised early presentation at health facilities.
More Than 1,000 Confirmed Cases in Nigeria
The scale of the national situation explains why the agency has begun preparing ahead of the next peak season.
By epidemiological week 33, Nigeria had recorded 7,426 suspected cases, 1,035 confirmed cases and 252 deaths in 2026.
The confirmed cases were reported across 23 states and 117 local government areas.
The case fatality rate stood at 24.4 per cent.
The latest available report also showed that the number of newly confirmed cases increased during week 33.
Nigeria recorded 14 new confirmed cases during that week, compared with four in the preceding week.
The new cases were recorded in Ondo, Edo, Bauchi and Benue states.
Two deaths were also reported during the week.
The fluctuations demonstrate why health authorities cannot rely on a short period of reduced transmission to assume that the threat has disappeared.
Lassa fever activity can rise and fall from one epidemiological week to another.
Continuous surveillance is therefore necessary.
Why the November-April Period Matters
According to the NCDC, Lassa fever occurs throughout the year.
However, transmission generally increases during the dry season, particularly between November and April.
This seasonal pattern is one reason the agency is beginning preparations now.
Waiting until infections begin rising sharply could put additional pressure on hospitals and laboratories.
By strengthening preparedness before the peak period, health authorities can potentially identify cases earlier and reduce delays in treatment.
Preparedness can include ensuring that health workers understand the symptoms, laboratories have the capacity to test samples, protective equipment is available and referral systems function properly.
Communities also have a major role.
People need to understand how the disease is transmitted and what practical steps they can take to reduce exposure.
Food storage, waste disposal, household cleanliness and rodent control are particularly important.
How Lassa Fever Spreads
Lassa fever is primarily associated with exposure to the Mastomys natalensis, commonly known as the multimammate rat, which can carry the Lassa virus.
The virus can enter human environments through contact with infected rodents, their urine or faeces, or food contaminated by them.
This makes household and community sanitation an important part of prevention.
Food that is left uncovered can become contaminated.
Open waste can attract rodents.
Clutter can create places where rodents hide.
Cracks and openings in buildings can allow rodents to enter homes.
These conditions can increase the risk of human exposure.
This is why the NCDC is asking households to store food properly, maintain clean surroundings and prevent rodents from entering homes.
Ondo's Environmental Challenge
The warning has particular relevance to communities in Ondo State because environmental conditions can influence the spread of Lassa fever.
Many communities contain a mixture of urban, semi-urban and rural settlements.
Agricultural activities bring people into close contact with environments where rodents may live.
Food is often stored in homes and farm locations.
Markets and food-processing areas also require strong sanitation measures.
These factors mean that prevention cannot depend entirely on hospitals.
A person may become infected before ever visiting a healthcare facility.
Preventing infection therefore requires action within homes, markets, farms, schools and workplaces.
Early Treatment Can Save Lives
One of the biggest concerns identified by the NCDC is delayed presentation.
People may initially assume that a fever is malaria, typhoid or another common illness.
Some may attempt self-medication.
Others may visit multiple facilities before Lassa fever is suspected.
By the time a patient reaches a specialised treatment centre, the disease may already have become severe.
The NCDC has therefore urged Nigerians to seek medical care early when they develop symptoms that could be consistent with Lassa fever.
The warning is especially important in high-burden areas such as Ondo.
Healthcare workers also need to maintain a high level of suspicion.
A patient with fever who does not respond as expected to routine treatment may require further assessment.
Early suspicion can lead to earlier testing, referral and treatment.
Symptoms Should Not Be Ignored
Lassa fever can begin with symptoms that may appear relatively ordinary.
They can include fever, weakness and headache.
Some patients may develop more serious symptoms as the disease progresses.
The NCDC has encouraged Nigerians to seek medical attention early when symptoms such as fever, weakness, headache or bleeding occur.
People should not wait until a patient becomes critically ill before seeking professional care.
At the same time, Nigerians should not attempt to diagnose themselves based solely on symptoms.
Many illnesses can produce fever, headache and weakness.
The appropriate response is to seek medical evaluation rather than assuming that every fever is Lassa fever.
Healthcare Workers Remain at Risk
The health authorities are also concerned about infections among healthcare workers.
By epidemiological week 33, 54 healthcare workers had been infected with Lassa fever in 2026, according to the available situation-report data.
Healthcare workers are often among the first people exposed to patients who may have Lassa fever.
If infection-prevention procedures are not followed properly, the disease can spread within healthcare settings.
This can create a dangerous cycle.
A hospital that should be treating patients can itself become a site of transmission.
The NCDC has therefore identified healthcare-worker protection as a major part of the preparedness programme.
The agency has also been working on measures intended to strengthen infection prevention and control.
The 30-Day Healthcare Worker Protection Plan
Earlier in the year, the NCDC developed a 30-day Healthcare Worker Protection Plan aimed at reducing infections among frontline workers in high-burden states.
The initiative was developed with support from international health partners.
The programme reflects the growing recognition that controlling Lassa fever requires protecting the people who provide treatment.
Healthcare workers need appropriate protective equipment.
They need training.
They need clear protocols for suspected cases.
They also need facilities that allow infection-control procedures to be implemented effectively.
For Ondo State, where the disease burden is particularly high, protecting healthcare workers is especially important.
A shortage of infected or unavailable health workers can place additional pressure on already busy facilities.
Treatment Centres Have Managed Hundreds of Patients
The national response has also involved treatment centres.
By week 33, 783 patients had been managed at treatment centres in 2026, according to the situation report.
Treatment centres play a crucial role in the response because patients with confirmed or suspected Lassa fever may require specialised management.
The facilities need trained staff, infection-control systems, laboratory support and appropriate medicines.
They also need referral mechanisms capable of moving seriously ill patients quickly.
The quality and speed of care can have a major effect on survival.
This is why strengthening hospitals in high-burden states is part of the preparedness effort.
Why the Case Fatality Rate Is Concerning
The 24.4 per cent case fatality rate recorded by week 33 is one of the most concerning aspects of the latest national figures.
It means that approximately one in four confirmed patients had died by that point in the reporting period.
The rate was higher than the 18.6 per cent recorded during the corresponding period in 2025.
The NCDC has linked the high fatality burden to several challenges, including delayed presentation, health-seeking behaviour, cost-related barriers, environmental risks and healthcare-worker infections.
This demonstrates that reducing deaths will require more than increasing hospital capacity.
People must also reach hospitals earlier.
They must be tested more quickly.
Health workers must recognise suspected cases.
Patients must have access to appropriate treatment.
Communities must reduce exposure in the first place.
Cost Can Delay Medical Treatment
One of the challenges highlighted by the NCDC is the cost associated with seeking healthcare and clinical management.
For families with limited financial resources, medical treatment can be difficult to access.
A person with a fever may first try home remedies or purchase medication from a pharmacy rather than visit a hospital.
If symptoms become worse, the eventual cost of treatment can become even higher.
This creates a public-health dilemma.
The longer people wait, the more serious the illness may become.
Health authorities therefore need not only public-awareness campaigns but also practical measures that make testing and treatment accessible.
The Role of Primary Healthcare Centres
Primary healthcare facilities are particularly important because they are often the first point of contact for residents.
In rural communities, people may live far from specialist hospitals.
A strong primary healthcare system can identify suspected cases early and refer patients appropriately.
Health workers at primary facilities therefore need training and access to information about Lassa fever.
They should know when to suspect the disease.
They should understand appropriate infection-control procedures.
They should also know how to refer patients for laboratory testing and specialised treatment.
Strengthening primary healthcare could therefore reduce some of the delays that contribute to poor outcomes.
The NCDC's New Preparedness Plan
Dr Jide Idris said the agency has developed an accelerated readiness plan ahead of the 2026/2027 Lassa fever season.
The plan focuses on actions that need to be completed before the peak period.
The approach includes improving preparedness at state and local-government levels, strengthening surveillance and ensuring that laboratory samples can be transported and tested quickly.
The agency also wants test results to return to healthcare providers without unnecessary delays.
This is important because diagnosis is a key part of controlling the disease.
A suspected patient cannot be managed effectively if testing takes too long.
Similarly, health workers cannot make appropriate decisions if laboratory information is unavailable.
The One Health Approach
The NCDC has said that its response will be based on a One Health approach.
That means Lassa fever cannot be controlled by the health sector alone.
Environmental agencies, agricultural authorities, livestock officials, local governments and communities all have roles.
This approach is particularly relevant because the disease is closely connected to the environment and rodents.
Health authorities can treat infected people.
But if environmental conditions continue to encourage rodent infestation, new infections can continue.
Agricultural and environmental authorities therefore have a role in reducing risk.
Local governments also have responsibilities involving sanitation and waste management.
What Ondo Communities Can Do
The prevention message for households is straightforward.
Residents can:
Keep homes and surroundings clean.
Store food in tightly covered containers.
Prevent rodents from entering homes.
Seal openings where rodents may enter.
Dispose of waste properly.
Reduce clutter around houses.
Avoid contact with rodents.
Seek medical care early when symptoms develop.
The NCDC has specifically urged residents to store food in properly covered containers, keep rodents away from homes and block openings that could allow rodents to enter.
These measures may appear simple, but they are important because the virus can enter homes through everyday environmental conditions.
Markets Need Attention Too
Public-health efforts cannot stop at households.
Markets are important because they involve large numbers of people and significant quantities of food.
Food sellers need to store products safely.
Waste needs to be removed properly.
Rodent populations need to be controlled.
Market authorities and local governments can help by enforcing sanitation standards.
Food traders also need awareness of the risks associated with contamination.
The goal should not be to create panic.
It should be to establish habits that reduce the possibility of rodents coming into contact with food.
Schools Also Have a Role
Schools can contribute to prevention by educating students about basic hygiene and disease awareness.
Children can take information home to their families.
Teachers can encourage students to avoid contact with rodents and report illness early.
School environments should also maintain proper waste disposal and cleanliness.
Because young people between 21 and 30 years have been identified as the age group most affected by Lassa fever in the 2026 data, awareness among young adults is particularly important.
The disease does not target only one age group, but the data show that young adults have represented a substantial share of confirmed infections.
Young Adults Are the Most Affected Group
The NCDC data show that people aged 21 to 30 years remain the predominant age group affected by Lassa fever.
Confirmed cases have ranged from children as young as one year to adults aged 93.
The median age was approximately 30 years.
The male-to-female ratio among confirmed cases was relatively close.
The concentration among young adults could have important implications for public-awareness strategies.
This age group includes university students, young workers, traders, farmers and young families.
Health messages therefore need to reach them where they live, work and study.
Social media, radio, community meetings and health facilities can all play a role.
Why Public Awareness Must Start Early
Waiting until the peak season to begin public education could be too late.
People need to understand the risks before infections increase.
This is why the current NCDC warning is important.
September provides an opportunity to strengthen awareness before the November-April period.
Health authorities in Ondo can use this window to conduct community sensitisation programmes.
Traditional rulers, religious leaders, market associations, youth groups and community development associations can all help communicate the message.
A local leader speaking in a familiar language can sometimes reach residents more effectively than a national campaign.
Traditional Institutions Can Help
Ondo State has a strong network of traditional institutions.
Obas and community leaders can help communicate public-health messages.
They can encourage residents to keep compounds clean, store food safely and seek medical treatment early.
They can also help dispel myths.
Lassa fever should not be surrounded by stigma.
A person suspected of having the disease should be encouraged to seek medical attention.
Communities should avoid ostracising patients or their families.
Stigma can cause people to hide illness, which can delay diagnosis and increase risk.
Religious Organisations Can Also Help
Churches and mosques can provide another platform for public-health education.
Religious leaders can include brief prevention messages in services and community programmes.
They can encourage members who develop persistent fever or other concerning symptoms to seek medical attention.
This is particularly useful in rural communities where religious institutions have strong social networks.
The message should complement, not replace, professional medical advice.
The Danger of Self-Medication
Self-medication remains a major concern in the fight against Lassa fever.
A person who assumes that every fever is malaria may take antimalarial drugs repeatedly without seeking proper assessment.
Another person may purchase antibiotics without prescription.
This can delay the diagnosis of Lassa fever.
The NCDC specifically identified delayed presentation and health-seeking behaviour as challenges affecting the national response.
The public-health message should therefore be clear: persistent or concerning symptoms should be assessed by a healthcare professional.
Ondo's Health System Faces a Major Test
Being Nigeria's highest-burden state means Ondo's health system faces particular pressure.
Hospitals need adequate staffing.
Laboratories need capacity.
Treatment centres need resources.
Health workers need protection.
Surveillance needs to be continuous.
Local governments need to support environmental-health measures.
The state also needs to maintain public confidence.
When people trust health authorities, they are more likely to report symptoms and cooperate with contact-tracing efforts.
Contact Tracing Remains Important
Contact tracing helps health authorities identify people who may have been exposed to an infected person.
The NCDC has continued to support active case search and contact tracing.
By week 33, more than 2,000 contacts had been listed cumulatively, with some still under follow-up, according to the available situation-report data.
Contact tracing is particularly important because early identification allows people who develop symptoms to receive attention quickly.
It can also help authorities understand where transmission is occurring.
Laboratory Capacity Matters
Testing is essential because Lassa fever symptoms can resemble other illnesses.
A patient cannot be reliably diagnosed based solely on symptoms.
Laboratory testing helps confirm infection.
This is why the NCDC has emphasised faster transportation and processing of samples.
For high-burden states such as Ondo, improving laboratory turnaround times can be especially important.
A delay of several days can make a significant difference when a patient is seriously ill.
What Health Workers Should Watch For
The NCDC has urged healthcare workers to maintain a high index of suspicion.
That means Lassa fever should remain among the conditions considered when patients present with compatible symptoms, particularly in high-burden areas.
Health workers also need to follow infection-prevention procedures.
Appropriate protective equipment and safe handling of potentially infectious materials are essential.
Healthcare workers should not assume that a patient with a common fever is automatically free of Lassa fever.
At the same time, they should avoid unnecessary alarm.
Clinical assessment and appropriate testing are the correct approach.
The Wider South-West Implication
Although Ondo is the main South-West state highlighted in the latest warning, the issue has implications for the entire region.
People travel between Ondo and neighbouring states.
Goods move between markets.
Students travel for education.
Workers move between cities.
Families visit one another.
This means disease surveillance cannot be limited to one state's borders.
Lassa fever preparedness should involve neighbouring states and regional health authorities.
Cross-border communication can help identify cases and ensure appropriate follow-up.
Why Edo Is Also Important to the South-West
Edo State, while geographically classified in the South-South, is also one of the five high-burden states.
Its inclusion alongside Ondo demonstrates the regional nature of the problem.
People move frequently between Ondo and Edo.
Commercial and family links are strong.
Health authorities therefore need to consider movement patterns when planning surveillance.
The disease does not respect state boundaries.
The Federal Government's Role
The Federal Government, through national health institutions, has a responsibility to support high-burden states.
That support can involve laboratory capacity, technical expertise, surveillance, training and emergency response.
But the NCDC has also stressed that states and local governments must take ownership of preparedness.
The Federal Government cannot manage every community.
Local systems need to be capable of identifying risks and responding quickly.
This is particularly important during seasonal increases.
Funding Will Be Important
Preparedness requires money.
Hospitals need supplies.
Laboratories need equipment.
Health workers need training.
Communities need awareness programmes.
Environmental sanitation requires resources.
The NCDC has raised concerns about inadequate preparedness funding and over-reliance on federal resources in some states.
This means state governments will need to make deliberate investments before the peak season.
Waiting for an outbreak before releasing funds can delay the response.
Preparedness is usually cheaper and more effective than emergency intervention after cases have already increased.
What Residents Should Do Now
The latest warning should not cause panic.
Instead, it should encourage practical action.
Residents of Ondo and other high-burden states should pay attention to hygiene and rodent control.
Food should be stored safely.
Waste should be properly disposed of.
Homes should be kept clean.
Rodent entry points should be blocked where possible.
People who become sick should seek medical care early.
These steps can reduce risk.
No Need for Panic
The identification of Ondo as a high-burden state should not be interpreted as a warning that residents should avoid one another or stop normal activities.
Lassa fever is not transmitted simply by being near every person who has a fever.
The appropriate response is awareness, prevention and early medical attention.
People should also avoid spreading rumours about alleged cases.
Only health authorities and appropriate medical professionals can confirm infections.
Rumours can create stigma and discourage people from seeking treatment.
The Road to the 2026/2027 Season
The NCDC has effectively given states a preparation window.
The period before November provides an opportunity to strengthen the system.
Ondo State can use the period to assess treatment centres, train health workers, strengthen laboratories, improve surveillance and increase community awareness.
Local governments can intensify sanitation and waste-management activities.
Communities can organise awareness programmes.
Households can improve food storage and rodent control.
These actions can help reduce the pressure that may otherwise develop during the peak period.
A Test of Community Preparedness
Lassa fever prevention ultimately depends on thousands of individual decisions.
A family deciding to store food in a covered container contributes to prevention.
A landlord sealing a hole through which rodents enter contributes.
A market association improving waste management contributes.
A health worker recognising a suspected case early contributes.
A patient seeking medical care rather than relying solely on self-medication contributes.
The national response is therefore built from actions taken at community level.
What Happens Next
The NCDC says its accelerated readiness plan will be implemented before the peak Lassa fever period.
Additional attention and resources are expected to go toward high-burden areas.
Ondo is therefore likely to remain a major focus of surveillance and preparedness activities.
The state will need to work closely with local governments, health facilities, communities and federal health authorities.
The key objectives will be early detection, prompt treatment, protection of healthcare workers and reduction of environmental risks.
Final Perspective
The latest Lassa fever warning places Ondo State at the centre of Nigeria's preparations for the 2026/2027 transmission season.
The NCDC has identified Ondo, Bauchi, Taraba, Edo and Benue as the five states with the highest burden, collectively accounting for 86 per cent of confirmed cases in 2026.
Ondo's position is particularly concerning because the state accounted for approximately 33 per cent of confirmed infections by epidemiological week 33, the highest share nationally.
Nigeria had recorded 1,035 confirmed cases and 252 deaths by that reporting period, with a case fatality rate of 24.4 per cent.
Those numbers show why the latest preparedness campaign matters.
But the situation should not be viewed only through statistics.
Every confirmed case represents a person and a family.
Every death represents a preventable loss that health authorities are trying to reduce.
The NCDC's decision to begin strengthening preparedness before the peak season therefore provides an opportunity for Ondo and other high-burden states to act before infections rise.
The most important areas are already clear: early diagnosis, prompt treatment, stronger surveillance, healthcare-worker protection, better sanitation, safe food storage and effective rodent control.
Residents also have a role.
People should not ignore persistent fever or other concerning symptoms.
They should avoid relying entirely on self-medication.
They should seek professional medical attention early.
Households should keep food protected and surroundings clean.
Communities should support environmental sanitation.
Traditional rulers, religious leaders, market associations, schools and youth organisations can help spread accurate information.
For Ondo State, the warning is both a challenge and an opportunity.
The state has been identified as the country's highest-burden area, but that also means that targeted prevention and preparedness could have a significant effect on Nigeria's overall Lassa fever burden.
The next several weeks will therefore be important.
If health authorities, local governments and communities use this preparation period effectively, they may be able to detect cases earlier, protect healthcare workers better and reduce the number of severe infections and deaths when the peak season arrives.
The message from the health authorities is not one of panic.
It is one of preparation.
And for residents of Ondo and other high-burden states, preparation begins with simple actions: keep the environment clean, keep rodents away, protect food, recognise symptoms and seek medical care early.
Iroyin Yoruba Television will continue to monitor the Lassa fever situation in Ondo State and across the South-West as Nigeria prepares for the 2026/2027 peak transmission season.