The 2001 UK foot-and-mouth crisis resulted in the slaughter of 10 million animals — raising ethical questions about mass culling as disease control.
Mass disease culling welfare involves profound ethical tensions between individual animal welfare and population or economic outcomes. Culling healthy contact animals before clinical signs appear prevents disease spread but causes death to animals that might never have been infected. Vaccination alternatives exist for most livestock diseases but are resisted by trade interests because vaccinated animals cannot be easily distinguished serologically from naturally infected animals. The 2001 UK experience demonstrated that mass culling at scale causes enormous welfare harm and that vaccination deserves serious reconsideration as a primary control tool. Individual welfare costs of mass culling require explicit justification, not just assumed.