"Asymptomatic carriers" refers to individuals who are infected with a disease or virus but do not show any symptoms. They can still spread the illness to others without feeling or appearing sick themselves.
Sentences with «asymptomatic carriers»
Commentary: Active Surveillance, Isolation of Asymptomatic Carriers of Clostridium difficile at Hospital Admission (sciencedaily.com)
Plowe is trying to develop surveillance methods that hit the «sweet spot,» by which he means sensitive enough to detect very low parasite loads in asymptomatic carriers — microscopy is too crude — but portable enough to use in the field. (sciencemag.org)