Modifiers matching factor:

• additional,
• environmental,
• economic,
• key,
• external,
• physical,
• systemic,
• isolated,
• biological,
• personal,
• cultural,
• regulatory,
• demographic,
• traditional,
• level,
• climatic,
• intracellular,
• exogenous,
• interfering,
• positive,
• important,
• relevant,
• diverse,
• underlying,
• nonliving,
• internal,
• static,
• local,
• biochemical,
• molecular,
• contextual,
• hemostatic,
• medical,
• genetic,
• dynamic,
• protective,
• technical,
• glandular,
• behavioural,
• significant,
• complex,
• temporary,
• critical,
• social,
• geometric,
• pathological,
• historical,
• psychological,
• extraneous,
• intrinsic,
• natural,
• primary,
• individual,
• geometrical,
• endogenous,
• multiple,
• negative,
• mental,
• common,
• organisational,
• legal,
• active,
• dimensional,
• cellular,
• chemical,
• dietary,
• uncontrollable,
• harmful,
• major,
• secondary,
• special,
• outside,
• structural,
• seasonal,
• ecological,
• subjective,
• defensive,
• logical,
• vital,
• clinical,
• variable,
• mechanical,
• cognitive,
• virulent,
• organizational,
• biologic,
• discrete,
• spatial,
• physiological,

Simple categories matching virulent:

• disease,
• organism,
• factor,
• pathogen,
• microorganism,