Definition of infective
a : producing or capable of producing or transmitting infection … infective oocysts are ingested with contaminated feed or water.— Douglas N. Stern Affected cats not yet showing signs of illness may shed the virus and be infective to other cats … — Cat Fancy
b : caused by or resulting from an infection with one or more pathogenic agents infective bacterial endocarditis
c : affecting others : spreading easily to others Different teachers will demonstrate different skills and strengths. Some will have … an infective enthusiasm for their own subject.— Jonathan Glazzard et al.
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