For every clinical case of poliomyelitis subclinical cases are -
It is estimated that for every clinical case, there may be 1000 subclinical cases in children and 75 in adults. Ref :PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page:205
500 in children and 75 in adults
500 in children and 25 in adults
250 in children and 25 in adults
1000 in children and 75 in adults
Communicable diseases