DNA database hits were very rare events until the late 1990s. A combination of the maturity of CODIS software, adoption of STR technology, and availability of funding has resulted in a significant increase in the number of hits.
There have been tens of thousands of DNA database offender hits resulting from searches at the state and local levels . They included hits between states, linking unsolved forensic profiles to convicted offenders from other states or to forensic cases from other states. DNA database searches have provided breaks in numerous high profile rape and homicide cases. This demonstrates the effectiveness of such searches in providing investigative leads in unsolved cases.
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