Inghams Group Ltd. slumped up to 14% in early Monday trade after the chicken producer announced a full lockdown of its Western Australia operations. The move follows confirmation of H5N1 avian influenza in the state, prompting the company to bar all non‑essential personnel from farms and processing sites that sit more than 690 km from the infected zone. The announcement rattled the livestock market.

The company stressed that no commercial poultry have tested positive, limiting immediate production losses. However, restricting feed deliveries and crew rotations could compress margins at a time when Australian poultry demand remains strong. Supply chain disruptions could also affect downstream retailers. Analysts noted that any prolonged shutdown risks eroding quarterly earnings and may force Inghams to draw on cash reserves.

Investors reacted quickly, wiping out a significant portion of market value and prompting a sell‑off across the broader food sector. With biosecurity measures now in place, Inghams faces a near‑term earnings dip until the outbreak is contained. Regulators will monitor the situation closely. The stock’s sharp decline underscores how disease alerts can instantly reshape Australian agribusiness risk profiles.