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Preventing African Swine Fever (ASF) means blocking every route the virus could use to reach your herd, since there is currently no widely available cure and vaccine options remain limited in most regions. ASF is a highly contagious viral disease that can kill nearly 100% of infected pigs within days, and it spreads through direct contact, contaminated feed, vehicles, equipment, and even contaminated pork products — which makes farm-level prevention the single most important defense available.

Why ASF Prevention Is Non-Negotiable

• No reliable treatment. Once pigs are infected, mortality is extremely high regardless of care provided.
• Rapid spread. The virus survives for weeks or months in meat, feces, and on surfaces, making indirect transmission common.
• Regional impact. A single confirmed case can trigger movement restrictions or culling zones that affect farms well beyond the infected site.

How African Swine Fever Spreads

• Direct contact between infected and healthy pigs
• Contaminated feed, especially untreated food waste or swill
• Vehicles, boots, and equipment moving between farms
• Wild boar populations in regions where they’re present
• Contaminated pork or pork products brought onto the farm

Core Prevention Measures

1. Eliminate Swill and Food-Waste Feeding

Never feed pigs untreated kitchen scraps, restaurant waste, or meat products — this is one of the most well-documented routes ASF has used to enter new regions.

2. Control All Farm Access

Restrict visitors, especially anyone who has recently been on another pig farm, and maintain a strict vehicle wash-and-disinfect routine at the property boundary.

3. Source Pigs Carefully

Buy only from suppliers with known, verifiable health status, and quarantine every new animal before it joins the herd.

4. Manage Wild Boar Contact

Where wild boar are present, secure fencing and prevent any contact between outdoor areas, feed storage, and wild populations.

5. Monitor and Report Early

Know the early signs — high fever, loss of appetite, red or purple skin discoloration, sudden deaths — and report suspected cases to a veterinarian or animal health authority immediately rather than waiting to see if symptoms worsen.

What to Do If You Suspect an Outbreak

1. Isolate affected animals immediately. Separate sick pigs from the rest of the herd without moving them off the property.
2. Stop all movement. Halt any pig, vehicle, or equipment movement on or off the farm until a vet has assessed the situation.
3. Contact your veterinarian or animal health authority. ASF is a reportable disease in most regions, and early reporting helps contain regional spread.
4. Preserve records. Recent movement, feed sourcing, and visitor logs help authorities trace the possible source.

Frequently Asked Questions

Is there a vaccine for African Swine Fever?

Vaccine availability varies by region and is still limited compared to other livestock diseases, which is why farm-level prevention measures remain the primary defense in most parts of the world.

Can African Swine Fever infect humans?

No, ASF does not infect humans and is not a food safety risk in that sense, but it is extremely contagious and often fatal among pigs.

How long can the ASF virus survive outside a pig?

The virus can survive for weeks in chilled meat and months in frozen meat, and can persist on contaminated surfaces, clothing, and equipment for extended periods, which is why vehicle and visitor biosecurity is so critical.

What is the biggest risk factor for introducing ASF to a farm?

Feeding untreated food waste or swill is widely considered the single highest-risk pathway, followed closely by contaminated vehicles and unverified pig sourcing.