infect + -ive
infective (comparative more infective, superlative most infective)
- Able to cause infection; infectious
infective (plural infectives)
- (epidemiology) A person who is capable of spreading a disease by infecting others
2002, Belinda Barnes & Glenn Fulford, Mathematical Modeling with Case Studies, ISBN 0415298040, page 140:
- It is evident that the greater the number of susceptibles, then the greater the increase in the number of infectives.