Systemic
Pyrexia (Fever)
Required
Depression
Specific
Weakness
General Systemic Signs
Inappetence (Anorexia)
Sudden death
Required
Musculoskeletal
Lameness
Pathognomonic
Painful muscle swelling
Pathognomonic
Emphysematous muscle swelling
Pathognomonic
Muscular stiffness
Respiratory
Dyspnea
Throat edema