Modifiers matching vaccine:

• individual,
• modern,
• bacterial,
• viral,
• new,
• complex,
• classical,
• pediatric,
• relevant,
• stable,

Simple categories matching viral:

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