In a world grappling with various challenges, an invisible threat looms large over the swine industry, casting a shadow on economies and livelihoods. African Swine Fever (ASF), a highly contagious and fatal viral disease, has emerged as a formidable adversary, impacting domestic and wild pigs across the globe. The World Health Organisation (WHO) reports a staggering 100% fatality rate among affected pigs, leaving us to grapple with its implications on both our food supply and economic stability.
ASF, caused by a DNA virus belonging to the Asfarviridae family, is primarily transmitted through arthropods like soft-bodied ticks. This viral spectre, however, spares humans and other livestock animals, affecting only pigs, boars, and hogs. The virus’s stealthy transmission mechanism involves these vectors taking up infected blood from pigs, subsequently perpetuating the disease as they move between hosts.
The disease announces its presence through a barrage of symptoms, ranging from high fever (40–42 degrees Celsius) to loss of appetite, diarrhoea, vomiting (often with mucus and blood), depression, and lethargy. The physical toll on pigs leads to a refusal to move, unsteadiness when standing, and a heavy discharge from their eyes and noses. Skin discoloration, a telltale sign, appears as red patches that might turn bluish-purple in later stages. Conjunctivitis and even miscarriages among pregnant sows are documented, culminating in a comatose state and eventual death within days.
The heart-wrenching scenario of pig deaths on a mass scale is ASF’s unmistakable calling card. Transmission occurs through direct contact with infected pigs, encompassing blood, tissues, secretions, and excretions. This stealthy assailant also spreads through contaminated food products and, shockingly, through the misguided practice of feeding waste to domestic pigs. The consequences are dire; even recovered pigs can unwittingly carry and perpetuate the disease.
The northeastern states of India have felt the chilling touch of ASF. Assam and Arunachal Pradesh were the first to report its presence in April 2020. The virus is believed to have travelled via dead pigs carried downstream through the tributaries of the Brahmaputra River from China. The repercussions of this arrival have reverberated across neighbouring states like Nagaland, Mizoram, Meghalaya, and Sikkim, with ASF leaving a trail of economic distress and uncertainty in its wake.
Recent reports from May 2023 (source: deccanherald.com) indicate ASF claiming 117 pig lives in Meghalaya alone, affecting four districts. Although the virus seems to have spared other northeastern states for the moment, the spectre of its return looms ominously, keeping communities on edge.
Economically, the toll is profound. The Veterinary and Animal Husbandry Department’s figures tell a grim tale: 38,000 pigs in Assam, 33,000 in Mizoram, 6,400 in Nagaland, and 417 in Meghalaya have fallen victim to ASF’s fury. These losses have culminated in a staggering financial burden of over Rs 200 crore. The act of culling more than 10,900 pigs reverberates not only in terms of the financial strain on farmers but also the larger implications for the economy and food supply chain.
The outbreak has sent shockwaves through the farming community, particularly impacting small-scale farmers who rely heavily on pig farming for their livelihoods. This vulnerability underscores the urgent need for robust preventive measures.
The way forward necessitates collective efforts. Educating farmers and workers, segregating infected pigs, responsible disposal of carcasses, and enforcing biosecurity protocols on farms are critical steps to curbing ASF’s resurgence. Swift reporting of pig deaths and refraining from consuming dead pigs also form the bedrock of defence against the virus’s spread.
Yet, the absence of a commercially available vaccine leaves us with one stark reality: culling infected pigs remains the most effective strategy to halt ASF’s march.
As we grapple with ASF’s formidable impact, the urgency to safeguard our pig farming industry, protect our economy, and ensure food security is paramount. By rallying behind awareness campaigns, practicing stringent biosecurity measures, and responsible disposal practices, we can unite to shield our livelihoods from this invisible but potent threat. In the face of ASF, unity becomes our greatest strength, and proactive action our only defence.
By Kelhoukhriehu Rutsa
(3rd year BVSc.)
Sunday, July 5, 2026