90,000 infants neglected

About 1 in 50 infants in the U.S. have been neglected or abused,
according to the first national study of the problem in that age group.

My question: why is this the first national study that has been conducted on this problem? Neglected children grow up to be emotionally imbalanced adults. The cycle continues.

http://news.yahoo.com/s/ap/20080404/ap_on_he_me/infant_neglect;_ylt=At_Fhdbafgj3__lQPXMWCpSs0NUE