Ogun State is experiencing an outbreak of African swine fever (ASF), with pig farmers in parts of the state reporting significant animal deaths and financial losses.

The outbreak has reportedly affected pig farms around the Ikangba and Agoro areas of Ogun State, prompting calls for an urgent, coordinated response from veterinary authorities and relevant government agencies.

Eustace Iyayi, Special Assistant to the Minister of Livestock Development, described the situation as requiring an emergency animal-health response rather than being treated as an isolated problem affecting individual farmers.

Reports indicate that some affected farmers have been losing pigs daily, while others have reportedly stopped production following the scale of their losses.

The current extent of the outbreak, including the total number of farms and pigs affected, has not yet been publicly established.

Ogun’s recurring ASF challenge

The development adds to Ogun State’s history with African swine fever, one of the most significant diseases affecting pig production.

A study of ASF outbreaks across pig farms in Ogun, Oyo and Lagos States between 2019 and 2021 documented substantial losses among affected farms. In Ogun alone, researchers recorded 1,789 deaths among 2,868 pigs across the farms included in the study.

The study estimated that the outbreaks resulted in significant financial losses across the three states, with Ogun recording particularly severe herd losses.

Research from the period also identified animal movement, slaughter and disposal practices as factors that could contribute to the spread of the virus between farms.

The findings highlight the difficulty of controlling ASF in densely connected pig-production systems, where farms, markets, slaughter facilities, traders and transporters can form part of the same livestock network.

Farmers face pressure to cut their losses

The latest outbreak is also affecting the economics of pig production in affected areas.

According to reporting by The Guardian, some farmers have resorted to selling pigs quickly or disposing of affected animals as mortality continues. The report also cited claims of a significant decline in live-pig prices in affected areas.

For farmers already dealing with feed, medication and production costs, sudden animal deaths can create losses that extend beyond the value of the animals themselves.

Breeding stock, future production cycles and established markets can all be affected when an outbreak forces farmers to suspend or abandon production.

Why ASF remains difficult to control

African swine fever is a viral disease affecting domestic and wild pigs. It does not infect humans, but it can cause severe disease and high mortality in susceptible pig populations.

There is currently no widely available treatment that can eliminate ASF from an infected herd, making prevention, surveillance and outbreak control critical.

The virus can spread through infected animals and contaminated materials, including equipment, clothing and vehicles. Movement of infected pigs and contaminated pork products can also contribute to transmission.

This makes rapid reporting and strict biosecurity particularly important when unusual deaths begin occurring on farms.

Veterinary response under scrutiny

The latest situation has renewed attention on the capacity of veterinary services to detect and respond to livestock disease outbreaks.

An effective response requires more than confirming infected animals. Veterinary authorities also need to determine how the infection entered affected farms, identify potentially exposed holdings and monitor surrounding areas for additional cases.

Movement controls, farm-level biosecurity, appropriate carcass disposal and surveillance around affected locations are among the measures that can help limit further transmission.

There are also calls for stronger oversight of communal slaughter facilities, which can bring animals, people, equipment and vehicles from different production systems into close contact.

What happens next?

The immediate priority for authorities will be to establish the extent of the outbreak and prevent further spread to unaffected farms.

This will require timely disease reporting from farmers, veterinary investigation of suspected cases and stronger coordination between government agencies, veterinary professionals and the pig-farming community.

For farmers, early reporting of unusual mortality remains critical. Delayed reporting can make it more difficult to identify the source of an outbreak and trace potentially exposed animals.

The Ogun outbreak also highlights the need for sustained investment in livestock disease surveillance and preparedness, particularly in areas with concentrated pig production.

As investigations continue, the number of affected farms, the scale of animal losses and the source of the current outbreak will be important indicators to watch.

For Ogun’s pig farmers, however, the immediate concern remains clear: containing the spread before more farms and livelihoods are affected.