Modifiers matching zoonosis:

• serious,
• bacterial,
• common,
• canine,
• major,
• viral,
• widespread,

Simple categories matching widespread:

• condition,
• disease,
• zoonosis,
• material,
• disorder,
• phenomenon,
• affliction,
• sickness,
• event,
• catastrophe,
• situation,
• illness,
• problem,
• malady,
• calamity,
• scourge,
• therapy,
• energy,
• disturbance,
• disaster,
• rock,
• storm,
• dermatosis,
• hazard,
• emergency,
• area,
• infection,
• source,
• practice,