I concur with user3169 that a pronoun will solve your problem; but I suggest one, since you look to prevent the future occurrence of similar events, not of the same event (which has, after already occurred and therefore cannot be prevented). The reference of one may be either forward or backward:
Would my knowledge of this event prevent similar ones from occurring in the future?
Would my knowledge of this one prevent similar events from occurring in the future?
Even better would be FumbleFingers' suggestion:
Would my knowledge of this event prevent others like it from occurring in the future?
Two other points you do not ask about:
Knowledge is vague in this context. Your paraphrases suggest that what you mean is something like deeper understanding of this event; but your characterization of the event as recurrent suggests it you mean simply that your familiarity with or your awareness of or your having experienced the event will effect the desired end.
Make ... from occurring is not idiomatic. Keep ... from occurring is OK; but prevent is more suitable to formal discourse—and it's shorter, too. And if you will allow me to be really really picky, your knowledge cannot itself prevent future occurrences: it can only only enable you to prevent them.—