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Infectious vs Infective

Infectiousinfective as applied to agents related to the causing of disease may be interchangeable and then mean capable of infecting or tending to infect.

Infectious, however, is more often restricted to the technical and figurative senses expounded in the preceding article.

Infective may be distinctively applied to matter and means potentially infectious. In extended use it preserves the implication of corruption, strong in infect but often absent in infectious.