If an individual is a carrier of an infectious disease, he is if an individual is a carrier of an infectious disease, he is both symptomatic and noninfective infective both asymptomatic and infective asymptomatic

If an individual is a carrier of an infectious disease, he is BOTH ASYMPTOMATIC AND INFECTIVE .
An asymptomatic and infective carrier refers to a person, who is a carrier of a disease or has a disease causing infective agent in his system [that is, the person is infected with an infectious disease] but who is not showing any symptom of the disease. Carriers are not usually affected by the disease concerned but they can easily transmit it to other people.