Modifiers matching antigen:

• peripheral,
• foreign,
• exogenous,
• single,
• viral,
• main,
• free,
• several,
• strong,
• harmless,
• indoor,
• environmental,
• active,
• diverse,
• microbial,
• possible,
• simple,
• harmful,
• small,
• oral,
• internal,
• soluble,
• noninfectious,
• dangerous,
• perennial,
• extraneous,
• innocuous,
• outside,
• infectious,
• nutritional,
• outdoor,
• particulate,
• proteinaceous,
• extrinsic,
• endogenous,
• bacterial,
• lethal,

Simple categories matching viral:

• fever,
• disease,
• pathology,
• infection,
• drug,
• condition,
• capsid,
• entity,
• protein,
• promoter,
• ire,
• vaccine,
• carrier,
• pathogen,
• illness,
• outbreak,
• zoonosis,
• cause,
• diarrhoea,
• symptom,
• group,
• syndrome,
• property,
• hepatitis,
• system,
• particle,
• encephalitis,
• prodrome,
• vector,
• complication,
• lesion,
• std,
• agent,
• microorganism,
• component,
• characteristic,
• process,
• malady,
• pneumonia,
• antigen,
• organism,
• activity,