What is the first case of a paicular condition that comes to notice of a physician termed as?: (A) Primary case, (B) Secondary case, (C) Index case, (D) Refer case
Answer is C. Index case is the first case that comes to the attention of the investigator. Case is defined as a person in the population or study group identified as having the paicular disease, health disorder or condition under investigation. - Primary case: It is the first case of a communicable disease introduced into the population unit being studied. - Secondary case: are those developing from contact with a primary case.