Isolation is not needed for measles due to -: (A) There are healthy carriers, (B) Carriers are convalascents, (C) The infectivity in diseased is low, (D) There are incubatory carriers
Answer is D. Transmission directly from person to person by droplet infection from 4 days before onset of rash until 4days thereafter. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. PAGE NO - 147