Foot-and-Mouth Disease: Detecting and Preventing the New Strain

Vietnam is taking proactive steps to contain a newly identified strain of foot-and-mouth disease (FMD) virus that has entered the country, according to recent reports from Vietnamese agricultural authorities and animal health officials. The detection of the SAT1 serotype of the FMD virus in livestock has prompted immediate response measures aimed at preventing widespread outbreaks that could severely impact the nation’s livestock industry and rural economies.

The warning was first issued after laboratory confirmation identified the new strain in samples collected from infected cattle and buffalo in several provinces. Veterinary officials from Vietnam’s Department of Animal Health stated that the virus strain detected belongs to the SAT1 lineage, which is less commonly reported in Southeast Asia but has been associated with outbreaks in parts of Africa and the Middle East. This marks the first time this particular serotype has been confirmed in Vietnam, raising concerns about the potential for rapid spread among cloven-hoofed animals such as cattle, pigs, goats, and sheep.

Foot-and-mouth disease is a highly contagious viral infection that affects animals with split hooves. While it does not infect humans, it causes significant economic losses due to reduced milk production, weight loss, lameness, and in young animals, myocarditis that can lead to death. Outbreaks often result in trade restrictions, culling of infected herds, and costly vaccination campaigns. The virus spreads through direct contact with infected animals, contaminated feed or equipment, and even airborne particles under certain conditions.

In response to the detection, Vietnamese authorities have activated emergency protocols under the national animal disease control plan. These include restricting the movement of livestock from affected areas, increasing surveillance on farms and at border checkpoints, and launching targeted vaccination campaigns in high-risk zones. Officials have also urged farmers to report any signs of illness in their animals immediately, such as fever, blisters on the tongue and lips, drooling, and reluctance to move or eat.

Early detection and rapid response are critical to preventing the spread of foot-and-mouth disease. We are working closely with local authorities and farmers to strengthen biosecurity measures and ensure timely vaccination where needed.

Vietnam Department of Animal Health

The Ministry of Agriculture and Rural Development has coordinated with provincial veterinary offices to distribute informational materials to farmers, emphasizing hygiene practices such as disinfecting vehicles and footwear, avoiding the purchase of animals from unknown sources, and isolating new livestock for observation before introducing them to existing herds. Training sessions are being conducted in rural communes to help farmers recognize early symptoms and understand the importance of prompt reporting.

International organizations, including the World Organisation for Animal Health (WOAH, formerly OIE), have been notified of the situation. Vietnam has a history of managing FMD outbreaks through its national control program, which includes routine vaccination in endemic zones and strict monitoring of animal movements. However, the introduction of a new serotype like SAT1 presents a challenge because existing vaccines may not provide full protection against it. Laboratory testing is underway to determine the most effective vaccine strain for use in the current response.

Experts emphasize that while FMD does not pose a direct threat to human health, its economic impact can be devastating, particularly for smallholder farmers who rely on livestock for income and food security. A widespread outbreak could disrupt supply chains, increase meat and dairy prices, and lead to long-term losses in agricultural productivity. Preventive measures, are not only about animal health but also about safeguarding rural livelihoods.

As of now, there are no reports of the SAT1 strain spreading beyond the initially identified localities. Authorities continue to conduct active surveillance and PCR testing on suspicious cases. Farmers are advised to maintain vigilance and cooperate with veterinary teams during field visits. The situation remains under close monitoring, with updates expected as more data becomes available from ongoing investigations and vaccination efforts.