'prevent repeats' is a correct and usable part of a sentence in written English.
You can use it to explain that something should not happen again, or to suggest a course of action to stop something from happening again. For example: "Let's put in place some measures to prevent repeats of this problem in the future."
In a systematic review of repeat victimisation prevention, Grove et al. (2012) further identified the promising opportunities for burglary prevention by indicating that initiatives that were designed to prevent repeats experienced an average reduction in burglary of 22%%.
The two houses of Congress rushed to pass competing versions of the bill in recent weeks, saying they wanted to prevent repeats of the spectacular corporate scandals at Enron, WorldCom and others.
At UC Berkeley's Center for Hybrid and Embedded Software Systems (Chess), one of the projects is developing avionics software to prevent repeats of the attacks of September 11 , 2001
In other sections, the committee accuses police forces across England and Wales of an "alarming lack of consistency" when it comes to adopting a code of ethnics designed to prevent repeats of scandals such as Hillsborough and the controversies over undercover policing.
George Osborne said he would hike the standard rate of IPT by half a percentage point to 10%, and use the proceeds to top up a fund designed to prevent repeats of the carnage that afflicted communities in the north of England and Scotland over the winter.
Seeking to prevent repeats of the erroneous projections that made election night such an embarrassment for the networks, officials of ABC News said yesterday that they would no longer call a contest in any state until all of its polls had closed and would try to "insulate" their analysts from competitive pressures to project a winner prematurely.
