VietNamNet Bridge – Lai Chau Province late yesterday announced it was culling 117 pigs found to be infected with the African swine fever (ASF) virus, the first incident in the northern mountainous province since the disease flared up in Vietnam in late February.

Health workers sanitise the area around the house of Nguyen Van Can, the farmer involved in Lai Chau Province’s first reported African swine fever incident. — VNA/VNS Photo

On March 18, Nguyen Van Can, a farmer in Dong Phong Village, Tam Duong District, contacted the authorities to report his pigs were ill. Samples were sent to Hanoi for analysis and came back positive for the disease that is bringing devastation to the country’s hog industry.

This brought the number of affected localities in the country to 20, following discoveries of infected herds in the central province of Thua Thien-Hue and the northern province of Bac Ninh a few days ago.

According to the Department of Animal Health under the Ministry of Agriculture and Rural Development, nearly 35,000 pigs have been killed in an attempt to stop the devastating outbreak from reaching the southern farms that produce the industry’s largest outputs.

Nguyen Van Long, head of the department’s epidemiology office, said yesterday there was a very high risk the disease would continue to spread.

However, he urged consumers to remain calm as ASF does not transmit to or cause illnesses in humans.

“The culled figure accounts for only 0.1 per cent of the country’s total pig population,” Long said. “All the pigs found to be infected or suspected of being infected have been culled, ensuring the quality and food safety of the remaining population.”

The outbreaks have only occurred at small farms, with none boasting a herd larger than 500 pigs, Long said. Larger, industrial-scale farms are strictly following biosecurity standards and remain safe from the outbreaks.

The agriculture ministry’s inspections of ASF-hit localities have identified a number of reasons for the outbreaks, including pig breeders’ and traders’ rush to sell off ill pigs, the ASF virus’ resilience and low regard for hygiene and biosecurity measures among the holders of small farmers. The ministry also attributed the outbreaks to lax adherence to hygiene and biosecurity by health workers tasked with culling the pigs, resulting in exposure to the virus.

International support

Yesterday, the UN Food and Agriculture Organisation (FAO) and the World Organisation for Animal Health (OIE) said they had sent a delegation of experts to Vietnam to assess the situation in the country.

The delegation is tasked with advising the agriculture ministry on the best methods to dispose of affected pigs and how to optimise available resources to stop the spread of the ASF virus. It will also propose immediate, short-term and medium-term measures to address outbreaks and work to co-ordinate with Vietnam’s emergency response and the region’s contingency plan.

The delegation recommended Vietnam declare AFS a national emergency, create zoned areas to prevent the virus from spreading and develop standardised procedures for pig culling and carcass disposal.

Vietnam has an estimated 2.5 million households that raise pigs.

“The loss of pigs due to ASF infection and control measures leads to a heavy economic burden on many rural families," Albert T. Lieberg, the FAO representative in Vietnam, said following meetings last week with Vietnamese authorities.

ASF causes haemorrhagic fever in pigs and wild boars that is almost always fatal. There is no antidote or vaccine, with the only known preventative measure being a mass cull of infected livestock. The disease spreads by contact between infected pigs or other wild animals and can inflict massive economic damage on farms. 

Source: VNS